英语词汇“red heat”造句的方法、技巧、例句及翻译-英语例句辞典

Along an unused railway spur, four workmen labored in the shadowy red heat, setting up a platform and steel launchers for the evening fireworks. The Things They Carried 1990-01-01T00:00:00Z

Fopiano said she has to turn her truck on throughout the night to power a red heat lamp to keep them warm. 200 evacuees camp at high school as Elk fire rages in Spokane County 2023-08-21T04:00:00Z

To conduct their analysis, the scientists looked at both historical observations and climate models, focusing on the regions under the red heat warning. The UK’s extreme heatwave would have been "virtually impossible" without climate change 2022-07-29T04:00:00Z

We searched the Internet for shards of information and poured over maps with tiny red heat dots that might spell out our futures. The Dixie Fire disaster and me 2021-09-24T04:00:00Z

The bits of plastic seemingly disappear, melting into the red heat. The man who paves India's roads with old plastic 2018-07-09T04:00:00Z

The other – based on future climate projections – is almost the complete opposite, with the city located in a middle of an alarming red heat zone. Cape Town faces Day Zero: what happens when the city turns off the taps? 2018-02-03T05:00:00Z

At a red heat the litharge and borate of lead are fused, and cause the adhesion of the platinum to the softened glass. The Catholic World; Volume I, Issues 1-6 A Monthly Eclectic Magazine 2012-04-05T02:00:40.207Z

An equally good compound is made up of equal quantities of borax and pulverized glass, well wetted with alcohol, and heated to a red heat in a crucible. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z

At very high temperatures iron will absorb gases and retain them until again heated to red heat. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z

Hardened steel is tempered, or has its degree of hardness lowered, by being heated to a temperature considerably below that of a red heat, and then cooling suddenly. An Introduction to Machine Drawing and Design 2012-03-06T03:00:25.777Z

The iron must be brought to a bright cherry red heat before allowing it to cool, to soften it properly, and on no account must the cooling be hurried, or the metal will be hard. Electric Bells and All About Them A Practical Book for Practical Men 2012-03-06T03:00:25.273Z

Under a moderate red heat they become white and opaque, and may be easily crushed between iron rollers. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z

He states that with the acid of this compound cast steel may be welded at a yellow red heat, or at a temperature between the yellow, red, and white heats. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z

It requires a red heat of sixty hours to prepare the material of a common bottle. Knowledge is Power: A View of the Productive Forces of Modern Society and the Results of Labor, Capital and Skill. 2011-12-24T03:08:00.833Z

Sir H. Davy found that glass raised to a red heat became a conductor; and that sealing wax, pitch, amber, shellac, sulphur, and wax, became conductors when liquefied by heat. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z

These researches had been carried out with intense application; each was struck off at a red heat. Heroes of Science Chemists 2011-12-09T03:00:21.047Z

Previous to glazing, the printed ware must be brought to a red heat, for the sole object of burning the oil mixed with the colour. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z

Heat for 48 hours to a red heat in a box sealed with fire clay, and quench in a solution of 3 pounds of potash to 30 gallons of water. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z

If they had been of a dull red heat before, they were now of a bright redness, while flames were actually issuing from some of the lower portholes. A Boy of the Dominion A Tale of Canadian Immigration 2011-12-05T03:00:47.097Z

At a bright red heat it melts, losing its zinc by oxidation unless protected from the atmosphere. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 7 "Geoponici" to "Germany" 2011-09-26T02:00:25.313Z

More recently Edmond Fr�my and A. Verneuil obtained artificial rubies by reacting at a red heat with barium fluoride on amorphous alumina containing a small quantity of chromium. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z

In addition to the painting colours, there are a few metals which are used to enrich pottery; unfortunately, the number of those which can undergo exposure to a red heat without oxidizing is very limited. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z

It is better, however, to overheat the crank than to underheat it, providing that the heat in no case exceeds a barely perceptible red heat. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z

It is not appreciably volatilized at a red heat. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z

The operation is performed by mixing the weighed sample with a large excess of litharge in a crucible, and exposing it to a bright red heat for a short time. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z

H. Sainte-Claire Deville formed the zircon artificially by passing silicon fluoride at a red heat over the oxide zirconia in a porcelain tube. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z

From it the clays derive the property of absorbing and retaining a large quantity of water, and such is its affinity for it, that sometimes a red heat will hardly suffice to expel it completely. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z

The cold, glittering snow queen,--the little mermaid in her watery home,--all perished in the red heat! Only a Girl: or, A Physician for the Soul. 2011-07-13T02:00:14.230Z

When subjected to a red heat, it parts with its carbonic acid and water, and, if the operation be continued long enough, is converted into quicklime. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z

Paris turned loose, with her heart in her mouth and her enthusiasm at red heat, is not easily forgotten. Our Army at the Front 2011-06-26T02:00:07.933Z

The general plan adopted has been to form a mixture of salts fusible at a red heat, forming a liquid in which alumina will dissolve. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z

This is probably only a fiction, as the idea must have originated from witnessing the change undergone by flint when brought to a red heat. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z

Chains may be exposed to a dull red heat; all other articles may be heated over a fire of coal, brushwood, or straw until well scorched. On the cattle plague: or, Contagious typhus in horned cattle. Its history, origin, description, and treatment 2011-06-24T02:00:18.093Z

This enamelling appears to have been done, not by melting on any vitreous composition, as is practised at the present day, but by the effect of calcination for some time in a low red heat. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z

As the excitement of the Civil War increased, political animosity rose to a red heat. The Pictorial Press Its Origin and Progress 2011-06-15T02:00:20.920Z

"We have met," said Margaret Walsingham, panting and white-lipped, her wild gray eyes burning with red heat, and meeting his sneering gaze with loathing, "we have met, sir, by no will of mine." Faithful Margaret A Novel 2011-06-10T02:00:21.627Z

“I will next swallow a red-hot knife,” he announced, and brought in an iron blade, heated to a red heat. Leo the Circus Boy 2011-04-12T02:00:28.110Z

I know, from my own experience, that an author's last work is always his best one, in his own estimate, until it quite loses the red heat of composition. A Wonder Book and Tanglewood Tales For girls and boys 2011-02-25T03:01:12.793Z

It is then raised a little every day until the furnace is brought up to a full red heat, when it is ready for the first charge of ashes. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z

It is volatile at temperatures above 100� C. and rapidly vaporizes at a dull red heat. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of"

Now did Duncan scream for mercy, while the dark spirits laid hold of him, and proceeded to carry him to the mouth of the furnace, at last blown up into a fearful red heat. Wilson's Tales of the Borders and of Scotland Volume 5

In this case it is brought to a low red heat, and allowed to cool away from the air. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo"

It does not react with the alkali metals, but combines with magnesium at a low red heat to form a boride, and with other metals at more or less elevated temperatures. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John"

This is usually effected by running the pieces at full width over a couple of arched copper plates heated to a full red heat by direct fire. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea"

The nodules are not prepared in any way, but simply burned at a moderate red heat. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics"

For almost a week the little girl's affection kept at red heat; on the seventh day it began to show signs of flagging. The Third Class at Miss Kaye's A School Story

White hot—having a more intense degree of heat than red heat. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology

It reduces many metallic oxides, such as lead monoxide and cupric oxide, and decomposes water at a red heat. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John"

A brittle potassium alloy of silver-white colour and lamellar fracture is obtained by calcining 20 parts of bismuth with 16 of cream of tartar at a strong red heat. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea"

Moreover, if a permanent magnet be heated to a red heat, its magnetism is destroyed; for such a heat allows the molecules to freely arrange themselves without any external constraint. The Telephone An Account of the Phenomena of Electricity, Magnetism, and Sound, as Involved in Its Action

The alkaline carbonates undergo only a very slight decomposition, even at a very bright red heat. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades"

If the red heat was sustained until all the organic matter was burnt up, only an impression of the plant remained. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology

Calomel is a white powder which sublimes at a low red heat; it is insoluble in water, alcohol and ether. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 1 "Calhoun" to "Camoens"

This compound occurs in nature as bismuth ochre, and may be prepared artificially by oxidizing the metal at a red heat, or by heating the carbonate, nitrate or hydrate. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea"

At a red heat it blackens and gives off water. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth"

The controversy between him and his colleagues still raged at red heat over the whole ground of military estimates, the handling of the militia, and the construction of fortifications. The Life of William Ewart Gladstone (Vol 2 of 3)

The antimony should be broken into very small pieces, and thrown on the top of the lead when it is at red heat. Paper and Printing Recipes A Handy Volume of Practical Recipes, Concerning the Every-Day Business of Stationers, Printers, Binders, and the Kindred Trades

Mr. Phinn merely expresses an opinion about the Sisters of Mercy, which is entertained by most other people, saving Puseyites at a temperature of red heat. Punch - Volume 25 (Jul-Dec 1853)

It melts at below red heat to a brown mass, and its vapour density at both red and white heat corresponds to the formula Cu2Cl2. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright"

In contact with steam at a red heat it forms magnetite and ammonia. Etna A History of the Mountain and of its Eruptions

A finer quality of lamp-black, free from oily and empyreumatic parts, is obtained by calcining the soot in closed iron pots at a red heat. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade"

Of course it is, mamma, because at a red heat iron begins to unite with oxygen, or to rust. Harper's New Monthly Magazine, Vol. 2, No. 8, January, 1851

This mixture is to be exposed in a crucible to a fierce red heat for at least half an hour. Notes and Queries, Number 238, May 20, 1854 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc

It fuses at red heat, and colours glass a ruby-red. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright"

The platinum is maintained at a bright red heat, either by a gas flame or by an electric furnace, and the vapour is passed over it by leading in a current of oxygen. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago"

Metallic cobalt may be obtained by reduction of the oxide or chloride in a current of hydrogen at a red heat, or by heating the oxalate, under a layer of powdered glass. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade"

It is a white concrete metallic acid, formed by the combination of arsenic with oxygen, fixed in a red heat, soluble in water, and capable of combining with many of the salifiable bases. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries

It was a flat surface, with four holes which showed the red heat below, and looked like little volcanoes in a good temper. Our Young Folks at Home and Abroad

That instant the red heat of the liquor returned to the big man’s brain and he picked up the revolver. A Breath of Prairie and other stories

The heat of the blow-torch is so great that most of the boiler coils are maintained at red heat even while the water is passing through them. Boys' Book of Model Boats

It decomposes steam at a red heat, and slowly dissolves in dilute hydrochloric and sulphuric acids, but more readily in nitric acid. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade"

The oxyd of mercury revives without addition, by being heated to a slightly red heat. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries

This he handed over to Jake, who put it on the wire “devil” and strove with blow-pipe and flame to bring it to a red heat. The Tale of Timber Town

Two grizzled squaws stirred the pot, spreading a clawed fist to their eyes against the red heat of the coals, while young Cheschapah harangued the older chiefs. Red Men and White

Jupiter is believed by some observers still to glow with a dull red heat; and the high temperature of the much larger and still liquid mass of the sun is apparent to everybody. Pioneers of Science

These strips are put into iron boxes and kept at a red heat for a number of hours to anneal or soften them. Makers of Many Things

Charcoal, in a red heat, has the same power of decomposing water, by attracting the oxygen from its combination with hydrogen. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries

Iron vessels set above smoothly spread coals got hot, but not red-hot—red heat belonged to the lids. Dishes & Beverages of the Old South

The lowest stage of incandescence is the familiar one of red heat. A Popular History of Astronomy During the Nineteenth Century Fourth Edition

The volatile matter consists mainly of various combinations of hydrogen and carbon, called hydrocarbons; it goes off in gas or smoke when the peat is heated to a red heat. The Economic Aspect of Geology

This gas, previously purified, circulates around the platinum filament, through which an electric current is passed sufficient to bring it to a red heat. Scientific American Supplement, No. 488, May 9, 1885

In this high temperature, either no oil is formed, or, if any was produced during the lower temperature at the beginning of the experiment, it is decomposed by the action of the red heat. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries

If a few grains are placed between two plates of copper, and subjected to a red heat, the copper becomes whitened. Zoonomia, Vol. II Or, the Laws of Organic Life

At a red heat alone can we procure a gas of good quality. Peat and its Uses as Fertilizer and Fuel

The precipitate, when well washed, is to be placed in a Hessian crucible, and exposed to a red heat for half an hour. Blackwood's Edinburgh Magazine, Volume 57, No. 357, June, 1845

If the termination of the line cannot be 239carried to a well, it should be deeply buried in a bed of coke or charcoal that has been subjected to a red heat. Lippincott's Magazine, Vol. 26, August, 1880 of Popular Literature and Science

It may also be exposed for twenty or thirty seconds at an obscure focus, of sufficient power to raise platinum to a red heat, without ignition. Fragments of science, V. 1-2

In it there was a long gun-barrel heated to a red heat. The Adventures of the Chevalier De La Salle and His Companions, in Their Explorations of the Prairies, Forests, Lakes, and Rivers, of the New World, and Their Interviews with the Savage Tribes, Two Hundred Years Ago

One hemisphere, forever in sunshine, remained in a low, red heat. Talents, Incorporated

Soon the rails were at a red heat near the center, the ends being comparatively cool. Southern Stories Retold from St. Nicholas

His piety, or his poetry—not admirable whichever it may be—glows here to a red heat. Blackwood's Edinburgh Magazine, Volume 61, No. 378, April, 1847

When the handle of the machine is rapidly turned the wire glows, first with a red heat, then with a white heat, and finally with the heat of fusion. Fragments of science, V. 1-2

At red heat, the little molecules can squeeze themselves through the crystalline interstices of quartz and steel. Unwise Child

The inner planet revolved about it with one side glowing low red heat and the other side piled high with frozen atmosphere. Talents, Incorporated

By this time I was in a red heat. Captain Canot or, Twenty Years of an African Slaver

The glaze will melt at a bright red heat, but it will crack if not fired harder; the harder it is fired the less likely is it to crack. On Laboratory Arts

The temperature is gradually increased to a dull red heat, which is maintained for a few minutes, the dish cooled in a desicator, and weighed. The Handbook of Soap Manufacture

Having thus expressed herself, she hastened into the kitchen, where she lighted the fire, blowing away with all her might to get the poker into a red heat. With Axe and Rifle

Except that the iron floors of their blast ovens were made to revolve while in a state of red heat, all was substantially the same as at the last place. Mexico and its Religion With Incidents of Travel in That Country During Parts of the Years 1851-52-53-54, and Historical Notices of Events Connected With Places Visited

In this method a semi-cylindrical copper plate is heated in a suitable furnace to a bright red heat, the cloths are rapidly passed over it, and the loose fibres thereby burnt off. The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student

All these alloys appear to require annealing at a red heat before their resistances are anything like constant. On Laboratory Arts

At a high temperature, this effect is even produced by silica, whence the unfitness of ultramarine for painting on glass or porcelain; and simply by a prolonged red heat the blue is rendered white. Field's Chromatography or Treatise on Colours and Pigments as Used by Artists

Machined or forged steel parts are packed with case-hardening material in metal boxes and subjected to a red heat. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel

A full red heat must then be given it, when, if the guano be pure, the ash will be pearly white, and will not exceed 3½ grains in weight. Guano A Treatise of Practical Information for Farmers

Cadmium vapour decomposes water at a red heat, with liberation of hydrogen, and formation of the oxide of the metal. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"

As soon as the work has fallen below a red heat it may be plunged into water, a process which has the effect of cracking off the glass-like layer of borax. On Laboratory Arts

Answering to similar acid tests as ultramarine, it is distinguished therefrom by assuming an olive-brown hue on exposure to a red heat. Field's Chromatography or Treatise on Colours and Pigments as Used by Artists

Briefly the treatment is as follows: In this treatment the tools are first preheated to a red heat, but small tools may be immersed without preheating. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel

How could an eternal red heat cool down? Fables of Infidelity and Facts of Faith Being an Examination of the Evidences of Infidelity

It forms small cubes which melt at a red heat and volatilize readily. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"

Spelter is soft brass, and is generally made from zinc one part, copper one part; an alloy easily granulated at a red heat; it is purchased in the granular form. On Laboratory Arts

Retaining its colour at a high red heat, it is now confined to enamel and porcelain painting, and to tinging glass of a fine red. Field's Chromatography or Treatise on Colours and Pigments as Used by Artists

Water annealing consists in heating the piece, allowing it to cool in air until it loses its red heat and becomes black and then immediately quenching it in water. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel

A. No. How much do iron and brass, in rods or bands, expand in length when heated to red heat? Scientific American, Volume XXXVI., No. 8, February 24, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures.

The wine test sometimes employed is prepared in the following manner:—Mix equal parts of finely powdered sulphur and of slacked quick-lime, and expose it to a red heat for twenty minutes. A Treatise on Adulterations of Food, and Culinary Poisons Exhibiting the Fraudulent Sophistications of Bread, Beer, Wine, Spiritous Liquors, Tea, Coffee, Cream, Confectionery, Vinegar, Mustard, Pepper, Cheese, Olive Oil, Pickles, and Other Articles Employed in Domestic Economy

During the process, however, the quartz is apt to get rotten, especially if the temperature has been anything approaching a full red heat. On Laboratory Arts

Consequently, it is better to reduce it by igniting at a red heat in a current of hydrogen and to weigh it as metallic cobalt. A Text-book of Assaying: For the Use of Those Connected with Mines.

Where furnaces are used, we recommend preheating the tools to a red heat in one furnace before putting them in a white hot furnace. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel

At 12 miles above the surface of the Earth the hull temperature indicators showed the hind part of the hull at red heat. Space Tug

If the adulteration has been effected by means of clay, the obtained precipitate, on exposure to a red heat in the bowl of a common tobacco-pipe, acquires a brick hardness. A Treatise on Adulterations of Food, and Culinary Poisons Exhibiting the Fraudulent Sophistications of Bread, Beer, Wine, Spiritous Liquors, Tea, Coffee, Cream, Confectionery, Vinegar, Mustard, Pepper, Cheese, Olive Oil, Pickles, and Other Articles Employed in Domestic Economy

Many years ago I prepared my own hard rouge by precipitating ferrous sulphate solution by aqueous ammonia, washing the precipitate, and heating it to a red heat. On Laboratory Arts

A speise of this kind, fused and exposed at a red heat to air, first loses arsenide of iron by oxidation. A Text-book of Assaying: For the Use of Those Connected with Mines.

Harden at a dull red heat, about 1,300°F. A clean coal or coke fire, or a good muffle-gas furnace will give best results. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel

It was compressed to white heat at the entering surface, and the metal plating went to bright red heat at that point. Space Tug

The precipitate being washed, dried, and exposed to a red heat, and weighed, nine-tenths of its weight indicate the weight of protoxide of iron contained in the water. A Treatise on Adulterations of Food, and Culinary Poisons Exhibiting the Fraudulent Sophistications of Bread, Beer, Wine, Spiritous Liquors, Tea, Coffee, Cream, Confectionery, Vinegar, Mustard, Pepper, Cheese, Olive Oil, Pickles, and Other Articles Employed in Domestic Economy

Soldering at a red heat by means of spelter is called brazing. On Laboratory Arts

The ignition should be performed carefully at not above a low red heat. A Text-book of Assaying: For the Use of Those Connected with Mines.

Certain other operations gave them something which looked very much like iron, but which would harden after quenching from a red heat. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel

You can weld metals together with powder-metallurgy powder at less than red heat. Space Tug

All around them, however, the volcanic vapours were steaming up from innumerable crevices, and the hot lava pouring out, moving slowly, with a dull red heat. Blackwood's Edinburgh Magazine - Volume 61, No. 376, February, 1847

The art of brazing is applied to metals which will withstand a red heat, and the joints so soldered have the strength of brass. On Laboratory Arts

On exposure to the air at a red heat the arsenic and the metal simultaneously oxidize. A Text-book of Assaying: For the Use of Those Connected with Mines.

Sulphur is of most trouble to rolling and forging operations when conducted at a red heat. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel

Hadn't he confided to me with a fierce, red heat on his forehead how his father had told him he wasn't "half a boy," because he had turned giddy climbing a high tree? My Young Days

As she was making this speech, her temper seemed to rise, and to become hot, and then hotter, till it glowed with a red heat. Phineas Finn The Irish Member

The temperature is gradually raised to a bright red heat, when the spelter will be observed to fuse or "run," as it is technically said to do. On Laboratory Arts

This is for bodies that will bear a red heat; for those compounds that require a lower temperature the heating in the muffle is omitted. A Text-book of Assaying: For the Use of Those Connected with Mines.

Primrose made toast for her father, and Rollo blew the coals to a red heat to hasten the operation. Wych Hazel

The face of Gilles de Laval, Lord of Retz, had shone all day with an unholy lustre like that of iron in which the red heat yet struggles with the black. The Black Douglas

By-and-by, as the cooling and condensing process continued, the water settled down from the condition of steam into one of a liquid at a dull red heat. Falling in Love With Other Essays on More Exact Branches of Science

It is diffused through all animal and vegetable bodies; and may be obtained by exposing them to a red heat. A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery. With a Short Explanation of Some of the Principal Natural Phenomena. For the Use of Schools and Families. Enlarged and Revised Edition.

It combines with silica, forming fluid slags; and at a red heat is liquid enough to be absorbed by a cupel; in fact, bismuth may take the place of lead in cupellation. A Text-book of Assaying: For the Use of Those Connected with Mines.

It is placed in a retort or oven, and heated to a red heat until the blue flame has passed off, and the flame become red. The Art of Perfumery And Methods of Obtaining the Odors of Plants

Not the mad desperation that strikes wildly and at random, but the still red heat that melts and burns and seethes with a steady, unquenchable fierceness. The Atlantic Monthly, Volume 12, No. 73, November, 1863

Of this mixture four parts are taken to one of zircon, thoroughly mixed, and melted in a platinum crucible at a red heat. Scientific American Supplement, No. 441, June 14, 1884.

When the metal magnesium is rolled out into a fine ribbon and heated to red heat it burns with a dazzling light. A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery. With a Short Explanation of Some of the Principal Natural Phenomena. For the Use of Schools and Families. Enlarged and Revised Edition.

Transfer to a porcelain boat, and reduce in a current of hydrogen at a red heat for half an hour. A Text-book of Assaying: For the Use of Those Connected with Mines.

These observations appear to show that the change to anhydrite is a very gradual process at temperatures below a red heat. Scientific American Supplement, No. 794, March 21, 1891

Carbonate of baryta loses its carbonic acid at a red heat, becomes caustic, and colors red litmus paper blue. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

We here doubtless meet with the phenomena of disaggregation undergone by metals at a red heat. The New Physics and Its Evolution

The reaction between boron and sulphureted hydrogen only commences at red heat, near the temperature of the softening of glass. Scientific American Supplement, No. 841, February 13, 1892

It fuses at a red heat, and volatilises freely in contact with air. A Text-book of Assaying: For the Use of Those Connected with Mines.

At a red heat platinic fluoride decomposes into metallic platinum and fluorine, which is evolved in the free state. Scientific American Supplement, No. 832, December 12, 1891

The carbonate of lime is also infusible, but at a red heat the carbonic acid is expelled, and the residue becomes caustic, appears whiter, and produces an intenser light. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

There was a red heat under her eyes: she had been crying. The Atlantic Monthly, Volume 12, No. 69, July, 1863

Arrange a cast-iron pot in a fire so as to heat it to the temperature of melted lead, or just below a red heat. Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889

The calcining is carried out at a dull red heat, which is gradually increased. A Text-book of Assaying: For the Use of Those Connected with Mines.

This oxalate of lime is then heated to a dark red heat in a platinum crucible with lid until the oxalate of lime is converted into carbonate of lime. Scientific American Supplement, No. 821, September 26, 1891

The sulphate of magnesia, at a red heat, loses its water and sulphuric acid, is entirely infusible, and gives now an alkaline reaction. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

Then a furnace was placed in the church, containing nine bars of iron of red heat, and the fire was blown till the bars, quivering with heat, glittered in the sight. Alfgar the Dane or the Second Chronicle of Aescendune

All my own fire-tests with the Granada emerald corroborate the views of M. Lewy, for in every instance the gem lost its hue when submitted to a red heat. Lippincott's Magazine of Popular Literature and Science Volume 11, No. 27, June, 1873

Fuse at a bright red heat for 10 or 15 minutes. A Text-book of Assaying: For the Use of Those Connected with Mines.

Having placed some living ferns in a mass of clay and dried them, he exposed them to a red heat, and obtained thereby striking resemblances to fossil plants. The Story of a Piece of Coal What It Is, Whence It Comes, and Whither It Goes

Take two parts of this, and mix it with one part of dry carbonate of potassa, and expose this to a red heat for about half an hour. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

Valencia regarded her with a bitter jealousy that was rising from red heat to white. The Doomswoman An Historical Romance of Old California

The results obtained were as follows: Loss at 100° C. Loss at red heat. Scientific American Supplement, No. 595, May 28, 1887

When the crucible is at a good red heat, above the fusing point of copper, drop the button of copper into it, and close the furnace. A Text-book of Assaying: For the Use of Those Connected with Mines.

It is noteworthy that mere red heat is insufficient in itself to ignite fire-damp, actual contact with flame being necessary for this purpose. The Story of a Piece of Coal What It Is, Whence It Comes, and Whither It Goes

In general the operation proceeds best when the substance is kept at a dull red heat. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

Yes, the diamond eyes entered everywhere, and into every form but that one where the red heat of revenge might have been expected to shrivel up and harden the issues of tears. Wilson's Tales of the Borders and of Scotland, Volume XXII

I know from my own experience, that an author's last work is always his best one, in his own estimate, until it quite loses the red heat of composition. Tanglewood Tales

Bring the tube gradually to a red heat, commencing by heating the lime just behind the asbestos plug, and travelling slowly backwards. A Text-book of Assaying: For the Use of Those Connected with Mines.

After a few days' exposure to red heat, the iron is converted into splendid steel, which has given such a reputation to that great manufacturing town. James Nasmyth: Engineer; an autobiography

The hydrate of baryta melts by a low red heat without losing its water of hydration. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

At one time it had for a little while glowed more brilliantly again, but it speedily reverted to its sullen red heat. The Time Machine

Under the same conditions it becomes incandescent in the vapour of sulphur, yielding calcium sulphide and carbon disulphide; the vapour of phosphorus will also unite with it at a red heat. The Project Gutenberg Encyclopedia Volume 1 of 28

Dry and transfer to a weighed porcelain crucible, mix with a little pure sulphur, and ignite at a red heat for 5 or 10 minutes in a current of hydrogen. A Text-book of Assaying: For the Use of Those Connected with Mines.

They are placed in the muffle for a period varying from twenty to thirty minutes, during which time they have acquired a bright red heat. The Story of the Invention of Steel Pens With a Description of the Manufacturing Process by Which They Are Produced

It is in the pure state infusible, and at a red heat produces such a splendid and vivid white light that the eyes can scarcely endure it. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

The mass was then submitted to a red heat for half an hour. Journal of an Expedition into the Interior of Tropical Australia

The shells are then to be well rinsed in water, placed in a crucible, and heated to a red heat for about four hours. Scientific American Supplement, No. 497, July 11, 1885

The precipitate is filtered off, washed with boiling water, dried, ignited at a red heat, and weighed when cold. A Text-book of Assaying: For the Use of Those Connected with Mines.

In those the calx has previously acquired the intended colour, a colour which bears a red heat without injury, and all that remains is to fix it on the piece by a vitreous flux. The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation

The carbonate of strontia fuses a little at a red heat, swells, and bubbles up like cauliflower. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

Darkness is only smoke that hangs suffocatingly over the low red heat of the sunken day. The Trespasser

"Absorbs oxygen readily, when brought to a red heat," said Mr. Arcubus, abstractedly, as he pulled at his long fingers and made their joints crack. The Atlantic Monthly, Volume 05, No. 29, March, 1860

The salt bears a low red heat without breaking up. A Text-book of Assaying: For the Use of Those Connected with Mines.

Isn't a red heat that you can see, and that warms you, better than a white heat that blinds you? Tales and Novels — Volume 09

It changes red litmus to blue, and at a low red heat it melts. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

The circuit is thus closed for an instant, the spiral is raised to a red heat, and lights the gas, and the flame rises and finally lights the burner. Scientific American Supplement, No. 362, December 9, 1882

The explosion rang out with startling force in the narrow hull of the ship, the lint received the fire and glowed with the sparks into spots of red heat. Cord and Creese

Remove the glass; evaporate to dryness, and ignite, at first gently over a Bunsen burner, and afterwards in the muffle at a red heat. A Text-book of Assaying: For the Use of Those Connected with Mines.

We cannot see very well, moreover, how this immense grate, lying on the ground, was raised to a red heat and kept at such a temperature. Scientific American Supplement, No. 360, November 25, 1882

Alumina is quite unalterable in the fire; the hydrate, however, losing its water at a low red heat. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

The sulphuric acid attacks the manure energetically, and much facilitates the incineration, which may be effected at a dark red heat. Scientific American Supplement, No. 362, December 9, 1882

There is a white and a red heat; a sullen glow as well as a crackling flame; cold-blooded as well as hot-blooded fanaticism. Literary Remains, Volume 2

It is next placed in the muffle, and, after two or three minutes at a red heat, it is removed and allowed to cool in the desiccator before weighing. A Text-book of Assaying: For the Use of Those Connected with Mines.

Each pit is covered with a separate lid at the floor level, and after having been well dried and brought to a red heat by the insertion of hot ingots, they are ready for operation. Scientific American Supplement, No. 360, November 25, 1882

The alkalies and their salts melt at a low red heat. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

A very fine wire will attain a red heat through a very weak current, but it would be very brittle, and subject to break at the least accident. Scientific American Supplement, No. 362, December 9, 1882

This is an important point, as it renders the production of a continuous bright red heat a matter of the greatest ease, even in crucibles of a comparatively large size. Scientific American Supplement, No. 430, March 29, 1884

Put these in the furnace at a red heat, cover the crucible, and gradually raise the temperature until the whole charge has melted down and is in a state of tranquil fusion. A Text-book of Assaying: For the Use of Those Connected with Mines.

In order to test the constancy of the battery, a red heat was maintained in a platinum-iridium wire by the current for six weeks, both day and night. Scientific American Supplement, No. 363, December 16, 1882

It melts at a low red heat, and volatilizes at a higher temperature. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

Before any cooking is done in a Japanese kitchen, the little charcoal fire is first blown to a bright red heat with that most useful and simple household utensil called a hifukidake. Glimpses of Unfamiliar Japan Second Series

Unlike either steel or cast iron, wrought iron does not harden when cooled suddenly from a red heat. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

On evaporating these solutions it is volatilised, although the anhydrous oxide is "fixed" at a red heat. A Text-book of Assaying: For the Use of Those Connected with Mines.

Unfortunately I had forgotten a sulphur-still; and the engineer vainly attempted to extract the ore by luting together two iron mortars, and by heating them to a red heat. The Land of Midian — Volume 1

It will not volatilize at a low red heat, nor will it decompose. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

Weigh a large soup bone; put it on a hot, clear fire until it is at a red heat. A Practical Physiology

Now heat the tray and bone with the work in an oven to a bright red heat for 30 minutes to an hour and then plunge the work into water or brine. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

Heat, at first, gently; and then at a red heat for from forty to sixty minutes. A Text-book of Assaying: For the Use of Those Connected with Mines.

"Not if I have to die on the line to stop it!" glowed Dalzell at red heat. Dave Darrin's Third Year at Annapolis Leaders of the Second Class Midshipmen

Heated at a continued dull red heat, it turns blue. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

My nature glows at thy dear name, With deep, red heat, like yonder ball, It shines with constant, ruddy flame; It shines for you, but tinges all. Canada and Other Poems

Iron and steel at a red heat oxidize rapidly with the formation of a scale and possible damage to the metal. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

Ignited alumina is difficultly soluble in acids; it is not reduced by hydrogen at a red heat. A Text-book of Assaying: For the Use of Those Connected with Mines.

Calculation shows that a body moving through the air at a velocity of about a mile per second will be brought, superficially, to the temperature of ``red heat'' by friction with the atmosphere. Curiosities of the Sky

It melts at a bright red heat, is more difficult than silver to fuse, but fuses more readily than gold. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

Some of them glowed like huge castles wrapped in fire, others with the dull red heat of burning coal. Jess

The greater the time taken for gradual cooling from the red heat, the more perfect will be the results of the annealing. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

The solution is then evaporated with an excess of hydrochloric acid, ignited at a low red heat, and weighed. A Text-book of Assaying: For the Use of Those Connected with Mines.

The difference between coal which flames and coal which burns only with a red heat, is chiefly that one has been baked and crushed more than the other. The Fairy-Land of Science

Go to TOC These two metals are volatilized at a temperature lower than that of a red heat, and produce, therefore, no reactions with borax and microcosmic salt. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

He answered that he had never felt more comfortable, and that he had sat in the red heat as if he had been in cool dew. Household Tales by Brothers Grimm

While steel is annealed by slow cooling, copper or brass is annealed by bringing to a low red heat and quickly plunging into cold water. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

In some cases a prolonged red heat is required; whilst with crystallised salts it is sometimes given off at the ordinary temperatures. A Text-book of Assaying: For the Use of Those Connected with Mines.

His jealousy, fanned to red heat by the discovery of her earlier defection, was enhanced fourfold by the thought of this last adventure. The Spoilers

After a short time, the temperature is increased to a low red heat, at which the arsenious acid is reduced and the metallic arsenic sublimed, and which re-condenses in the neck of the bulb. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

In the short space he stood there helplessly in the red heat of the fire the desperateness of the situation seared itself like the hot flame itself in his brain. The Golden Snare

In the case of cast iron and steel the temperature at the point to be welded should be great enough to produce a dull red heat. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

Evaporate to dryness in an iron dish and ignite at a low red heat in a crucible. A Text-book of Assaying: For the Use of Those Connected with Mines.

The hot blocks, which are protected in winter, are exposed to the sun in summer, and are heated nearly to red heat by the rays concentrated upon them by a series of large mirrors. The Dominion in 1983

The carbonate of magnesia is infusible, loses its carbonic acid at a red heat, and shrinks a little. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

At the back of his words some torment burned at red heat, remorselessly. The Red Planet

Bends may be made without kinking if the tube or pipe is brought to a full red heat all the way around its circumference and at the place where the bend is desired. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

It may be subjected to a red heat without being apparently affected, but at a higher temperature it slowly burns away. A Text-book of Assaying: For the Use of Those Connected with Mines.

This mould is carefully dried, and then gradually heated to a red heat. On the Economy of Machinery and Manufactures

It is very hard at common temperatures, but soft and yielding at a red heat. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

Its interior is in all likelihood a mass of molten matter far above a red heat, which is surrounded by a comparatively cool, yet, to our measure, extremely hot, vapor. Side-Lights on Astronomy and Kindred Fields of Popular Science

Tubing or pipes may be bent while being held between two flat metal surfaces while at a bright red heat. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

As to the heat required, silicates may be produced in the moist way at about incipient red heat, whereas to form the same in the dry way would require a much higher temperature. The Student's Elements of Geology

Steel is crystalline in structure, and when suddenly cooled from red heat by plunging into cold water, becomes hard and brittle. An Introduction to Chemical Science

Lime and its hydrate are infusible, but produce at a strong red heat a very intense and splendid white light, while the hydrate loses its water. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

If the quicksilver is subjected to a red heat in the large lead-pot, it will evaporate. The Albert N'Yanza, Great Basin of the Nile

Steel is usually welded at a bright red heat because of the danger of oxidizing or burning the metal if the temperature is carried above this point. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

The operator had been preparing a quantity of glowing charcoal, which was at a red heat. Wild Beasts and Their Ways, Reminiscences of Europe, Asia, Africa and America — Volume 1

When red-hot they were withdrawn, the little mound of earth covering the two pieces of iron being still in place but having been brought also to a red heat. The Bontoc Igorot

At a red heat, it oxidizes slowly and decomposes water; at a white heat it burns with a red flame. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations

Tucker laughed softly to himself as he watched the apple revolving in the red heat on its bit of string. The Deliverance; a romance of the Virginia tobacco fields

Preheating.—The ends to be welded are brought to a bright red heat by introducing the flame from a torch through the preheating gate. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

The curtain rose when we had got her at a red heat. No Name

These Bear Creek fathers could not keep their ire at red heat. The Virginian, a Horseman of the Plains

After the metal has been in the fire long enough to reach a red heat, it is removed temporarily and, if small enough in size, the ends are dipped into a box of flux. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

For welding iron, a flux of white sand is usually used, this material being placed on the metal after it has been brought to a red heat in the fire. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

The pipe must be kept at full red heat with the flames from one or more torches and must not be hammered to produce the bend. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

From this red heat the mass of metal should grow cooler as the distance from the weld becomes greater, so that no great strain is placed upon any one part. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

The heat is continued until the mould is thoroughly dried and the parts to be joined are brought to the red heat required. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

单词	red heat
例句	red heat Along an unused railway spur, four workmen labored in the shadowy red heat, setting up a platform and steel launchers for the evening fireworks. The Things They Carried 1990-01-01T00:00:00Z Fopiano said she has to turn her truck on throughout the night to power a red heat lamp to keep them warm. 200 evacuees camp at high school as Elk fire rages in Spokane County 2023-08-21T04:00:00Z To conduct their analysis, the scientists looked at both historical observations and climate models, focusing on the regions under the red heat warning. The UK’s extreme heatwave would have been "virtually impossible" without climate change 2022-07-29T04:00:00Z We searched the Internet for shards of information and poured over maps with tiny red heat dots that might spell out our futures. The Dixie Fire disaster and me 2021-09-24T04:00:00Z The bits of plastic seemingly disappear, melting into the red heat. The man who paves India's roads with old plastic 2018-07-09T04:00:00Z The other – based on future climate projections – is almost the complete opposite, with the city located in a middle of an alarming red heat zone. Cape Town faces Day Zero: what happens when the city turns off the taps? 2018-02-03T05:00:00Z At a red heat the litharge and borate of lead are fused, and cause the adhesion of the platinum to the softened glass. The Catholic World; Volume I, Issues 1-6 A Monthly Eclectic Magazine 2012-04-05T02:00:40.207Z An equally good compound is made up of equal quantities of borax and pulverized glass, well wetted with alcohol, and heated to a red heat in a crucible. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z At very high temperatures iron will absorb gases and retain them until again heated to red heat. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Hardened steel is tempered, or has its degree of hardness lowered, by being heated to a temperature considerably below that of a red heat, and then cooling suddenly. An Introduction to Machine Drawing and Design 2012-03-06T03:00:25.777Z The iron must be brought to a bright cherry red heat before allowing it to cool, to soften it properly, and on no account must the cooling be hurried, or the metal will be hard. Electric Bells and All About Them A Practical Book for Practical Men 2012-03-06T03:00:25.273Z Under a moderate red heat they become white and opaque, and may be easily crushed between iron rollers. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z He states that with the acid of this compound cast steel may be welded at a yellow red heat, or at a temperature between the yellow, red, and white heats. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z It requires a red heat of sixty hours to prepare the material of a common bottle. Knowledge is Power: A View of the Productive Forces of Modern Society and the Results of Labor, Capital and Skill. 2011-12-24T03:08:00.833Z Sir H. Davy found that glass raised to a red heat became a conductor; and that sealing wax, pitch, amber, shellac, sulphur, and wax, became conductors when liquefied by heat. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z These researches had been carried out with intense application; each was struck off at a red heat. Heroes of Science Chemists 2011-12-09T03:00:21.047Z Previous to glazing, the printed ware must be brought to a red heat, for the sole object of burning the oil mixed with the colour. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z Heat for 48 hours to a red heat in a box sealed with fire clay, and quench in a solution of 3 pounds of potash to 30 gallons of water. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z If they had been of a dull red heat before, they were now of a bright redness, while flames were actually issuing from some of the lower portholes. A Boy of the Dominion A Tale of Canadian Immigration 2011-12-05T03:00:47.097Z At a bright red heat it melts, losing its zinc by oxidation unless protected from the atmosphere. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 7 "Geoponici" to "Germany" 2011-09-26T02:00:25.313Z More recently Edmond Fr�my and A. Verneuil obtained artificial rubies by reacting at a red heat with barium fluoride on amorphous alumina containing a small quantity of chromium. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z In addition to the painting colours, there are a few metals which are used to enrich pottery; unfortunately, the number of those which can undergo exposure to a red heat without oxidizing is very limited. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z It is better, however, to overheat the crank than to underheat it, providing that the heat in no case exceeds a barely perceptible red heat. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z It is not appreciably volatilized at a red heat. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z The operation is performed by mixing the weighed sample with a large excess of litharge in a crucible, and exposing it to a bright red heat for a short time. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z H. Sainte-Claire Deville formed the zircon artificially by passing silicon fluoride at a red heat over the oxide zirconia in a porcelain tube. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z From it the clays derive the property of absorbing and retaining a large quantity of water, and such is its affinity for it, that sometimes a red heat will hardly suffice to expel it completely. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z The cold, glittering snow queen,--the little mermaid in her watery home,--all perished in the red heat! Only a Girl: or, A Physician for the Soul. 2011-07-13T02:00:14.230Z When subjected to a red heat, it parts with its carbonic acid and water, and, if the operation be continued long enough, is converted into quicklime. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z Paris turned loose, with her heart in her mouth and her enthusiasm at red heat, is not easily forgotten. Our Army at the Front 2011-06-26T02:00:07.933Z The general plan adopted has been to form a mixture of salts fusible at a red heat, forming a liquid in which alumina will dissolve. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z This is probably only a fiction, as the idea must have originated from witnessing the change undergone by flint when brought to a red heat. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z Chains may be exposed to a dull red heat; all other articles may be heated over a fire of coal, brushwood, or straw until well scorched. On the cattle plague: or, Contagious typhus in horned cattle. Its history, origin, description, and treatment 2011-06-24T02:00:18.093Z This enamelling appears to have been done, not by melting on any vitreous composition, as is practised at the present day, but by the effect of calcination for some time in a low red heat. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z As the excitement of the Civil War increased, political animosity rose to a red heat. The Pictorial Press Its Origin and Progress 2011-06-15T02:00:20.920Z "We have met," said Margaret Walsingham, panting and white-lipped, her wild gray eyes burning with red heat, and meeting his sneering gaze with loathing, "we have met, sir, by no will of mine." Faithful Margaret A Novel 2011-06-10T02:00:21.627Z “I will next swallow a red-hot knife,” he announced, and brought in an iron blade, heated to a red heat. Leo the Circus Boy 2011-04-12T02:00:28.110Z I know, from my own experience, that an author's last work is always his best one, in his own estimate, until it quite loses the red heat of composition. A Wonder Book and Tanglewood Tales For girls and boys 2011-02-25T03:01:12.793Z It is then raised a little every day until the furnace is brought up to a full red heat, when it is ready for the first charge of ashes. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z It is volatile at temperatures above 100� C. and rapidly vaporizes at a dull red heat. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" Now did Duncan scream for mercy, while the dark spirits laid hold of him, and proceeded to carry him to the mouth of the furnace, at last blown up into a fearful red heat. Wilson's Tales of the Borders and of Scotland Volume 5 In this case it is brought to a low red heat, and allowed to cool away from the air. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" It does not react with the alkali metals, but combines with magnesium at a low red heat to form a boride, and with other metals at more or less elevated temperatures. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" This is usually effected by running the pieces at full width over a couple of arched copper plates heated to a full red heat by direct fire. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" The nodules are not prepared in any way, but simply burned at a moderate red heat. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" For almost a week the little girl's affection kept at red heat; on the seventh day it began to show signs of flagging. The Third Class at Miss Kaye's A School Story White hot—having a more intense degree of heat than red heat. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology It reduces many metallic oxides, such as lead monoxide and cupric oxide, and decomposes water at a red heat. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" A brittle potassium alloy of silver-white colour and lamellar fracture is obtained by calcining 20 parts of bismuth with 16 of cream of tartar at a strong red heat. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" Moreover, if a permanent magnet be heated to a red heat, its magnetism is destroyed; for such a heat allows the molecules to freely arrange themselves without any external constraint. The Telephone An Account of the Phenomena of Electricity, Magnetism, and Sound, as Involved in Its Action The alkaline carbonates undergo only a very slight decomposition, even at a very bright red heat. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" If the red heat was sustained until all the organic matter was burnt up, only an impression of the plant remained. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology Calomel is a white powder which sublimes at a low red heat; it is insoluble in water, alcohol and ether. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 1 "Calhoun" to "Camoens" This compound occurs in nature as bismuth ochre, and may be prepared artificially by oxidizing the metal at a red heat, or by heating the carbonate, nitrate or hydrate. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" At a red heat it blackens and gives off water. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" The controversy between him and his colleagues still raged at red heat over the whole ground of military estimates, the handling of the militia, and the construction of fortifications. The Life of William Ewart Gladstone (Vol 2 of 3) The antimony should be broken into very small pieces, and thrown on the top of the lead when it is at red heat. Paper and Printing Recipes A Handy Volume of Practical Recipes, Concerning the Every-Day Business of Stationers, Printers, Binders, and the Kindred Trades Mr. Phinn merely expresses an opinion about the Sisters of Mercy, which is entertained by most other people, saving Puseyites at a temperature of red heat. Punch - Volume 25 (Jul-Dec 1853) It melts at below red heat to a brown mass, and its vapour density at both red and white heat corresponds to the formula Cu2Cl2. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" In contact with steam at a red heat it forms magnetite and ammonia. Etna A History of the Mountain and of its Eruptions A finer quality of lamp-black, free from oily and empyreumatic parts, is obtained by calcining the soot in closed iron pots at a red heat. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" Of course it is, mamma, because at a red heat iron begins to unite with oxygen, or to rust. Harper's New Monthly Magazine, Vol. 2, No. 8, January, 1851 This mixture is to be exposed in a crucible to a fierce red heat for at least half an hour. Notes and Queries, Number 238, May 20, 1854 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc It fuses at red heat, and colours glass a ruby-red. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" The platinum is maintained at a bright red heat, either by a gas flame or by an electric furnace, and the vapour is passed over it by leading in a current of oxygen. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Metallic cobalt may be obtained by reduction of the oxide or chloride in a current of hydrogen at a red heat, or by heating the oxalate, under a layer of powdered glass. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" It is a white concrete metallic acid, formed by the combination of arsenic with oxygen, fixed in a red heat, soluble in water, and capable of combining with many of the salifiable bases. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries It was a flat surface, with four holes which showed the red heat below, and looked like little volcanoes in a good temper. Our Young Folks at Home and Abroad That instant the red heat of the liquor returned to the big man’s brain and he picked up the revolver. A Breath of Prairie and other stories The heat of the blow-torch is so great that most of the boiler coils are maintained at red heat even while the water is passing through them. Boys' Book of Model Boats It decomposes steam at a red heat, and slowly dissolves in dilute hydrochloric and sulphuric acids, but more readily in nitric acid. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" The oxyd of mercury revives without addition, by being heated to a slightly red heat. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries This he handed over to Jake, who put it on the wire “devil” and strove with blow-pipe and flame to bring it to a red heat. The Tale of Timber Town Two grizzled squaws stirred the pot, spreading a clawed fist to their eyes against the red heat of the coals, while young Cheschapah harangued the older chiefs. Red Men and White Jupiter is believed by some observers still to glow with a dull red heat; and the high temperature of the much larger and still liquid mass of the sun is apparent to everybody. Pioneers of Science These strips are put into iron boxes and kept at a red heat for a number of hours to anneal or soften them. Makers of Many Things Charcoal, in a red heat, has the same power of decomposing water, by attracting the oxygen from its combination with hydrogen. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries Iron vessels set above smoothly spread coals got hot, but not red-hot—red heat belonged to the lids. Dishes & Beverages of the Old South The lowest stage of incandescence is the familiar one of red heat. A Popular History of Astronomy During the Nineteenth Century Fourth Edition The volatile matter consists mainly of various combinations of hydrogen and carbon, called hydrocarbons; it goes off in gas or smoke when the peat is heated to a red heat. The Economic Aspect of Geology This gas, previously purified, circulates around the platinum filament, through which an electric current is passed sufficient to bring it to a red heat. Scientific American Supplement, No. 488, May 9, 1885 In this high temperature, either no oil is formed, or, if any was produced during the lower temperature at the beginning of the experiment, it is decomposed by the action of the red heat. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries If a few grains are placed between two plates of copper, and subjected to a red heat, the copper becomes whitened. Zoonomia, Vol. II Or, the Laws of Organic Life At a red heat alone can we procure a gas of good quality. Peat and its Uses as Fertilizer and Fuel The precipitate, when well washed, is to be placed in a Hessian crucible, and exposed to a red heat for half an hour. Blackwood's Edinburgh Magazine, Volume 57, No. 357, June, 1845 If the termination of the line cannot be 239carried to a well, it should be deeply buried in a bed of coke or charcoal that has been subjected to a red heat. Lippincott's Magazine, Vol. 26, August, 1880 of Popular Literature and Science It may also be exposed for twenty or thirty seconds at an obscure focus, of sufficient power to raise platinum to a red heat, without ignition. Fragments of science, V. 1-2 In it there was a long gun-barrel heated to a red heat. The Adventures of the Chevalier De La Salle and His Companions, in Their Explorations of the Prairies, Forests, Lakes, and Rivers, of the New World, and Their Interviews with the Savage Tribes, Two Hundred Years Ago One hemisphere, forever in sunshine, remained in a low, red heat. Talents, Incorporated Soon the rails were at a red heat near the center, the ends being comparatively cool. Southern Stories Retold from St. Nicholas His piety, or his poetry—not admirable whichever it may be—glows here to a red heat. Blackwood's Edinburgh Magazine, Volume 61, No. 378, April, 1847 When the handle of the machine is rapidly turned the wire glows, first with a red heat, then with a white heat, and finally with the heat of fusion. Fragments of science, V. 1-2 At red heat, the little molecules can squeeze themselves through the crystalline interstices of quartz and steel. Unwise Child The inner planet revolved about it with one side glowing low red heat and the other side piled high with frozen atmosphere. Talents, Incorporated By this time I was in a red heat. Captain Canot or, Twenty Years of an African Slaver The glaze will melt at a bright red heat, but it will crack if not fired harder; the harder it is fired the less likely is it to crack. On Laboratory Arts The temperature is gradually increased to a dull red heat, which is maintained for a few minutes, the dish cooled in a desicator, and weighed. The Handbook of Soap Manufacture Having thus expressed herself, she hastened into the kitchen, where she lighted the fire, blowing away with all her might to get the poker into a red heat. With Axe and Rifle Except that the iron floors of their blast ovens were made to revolve while in a state of red heat, all was substantially the same as at the last place. Mexico and its Religion With Incidents of Travel in That Country During Parts of the Years 1851-52-53-54, and Historical Notices of Events Connected With Places Visited In this method a semi-cylindrical copper plate is heated in a suitable furnace to a bright red heat, the cloths are rapidly passed over it, and the loose fibres thereby burnt off. The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student All these alloys appear to require annealing at a red heat before their resistances are anything like constant. On Laboratory Arts At a high temperature, this effect is even produced by silica, whence the unfitness of ultramarine for painting on glass or porcelain; and simply by a prolonged red heat the blue is rendered white. Field's Chromatography or Treatise on Colours and Pigments as Used by Artists Machined or forged steel parts are packed with case-hardening material in metal boxes and subjected to a red heat. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel A full red heat must then be given it, when, if the guano be pure, the ash will be pearly white, and will not exceed 3½ grains in weight. Guano A Treatise of Practical Information for Farmers Cadmium vapour decomposes water at a red heat, with liberation of hydrogen, and formation of the oxide of the metal. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" As soon as the work has fallen below a red heat it may be plunged into water, a process which has the effect of cracking off the glass-like layer of borax. On Laboratory Arts Answering to similar acid tests as ultramarine, it is distinguished therefrom by assuming an olive-brown hue on exposure to a red heat. Field's Chromatography or Treatise on Colours and Pigments as Used by Artists Briefly the treatment is as follows: In this treatment the tools are first preheated to a red heat, but small tools may be immersed without preheating. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel How could an eternal red heat cool down? Fables of Infidelity and Facts of Faith Being an Examination of the Evidences of Infidelity It forms small cubes which melt at a red heat and volatilize readily. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" Spelter is soft brass, and is generally made from zinc one part, copper one part; an alloy easily granulated at a red heat; it is purchased in the granular form. On Laboratory Arts Retaining its colour at a high red heat, it is now confined to enamel and porcelain painting, and to tinging glass of a fine red. Field's Chromatography or Treatise on Colours and Pigments as Used by Artists Water annealing consists in heating the piece, allowing it to cool in air until it loses its red heat and becomes black and then immediately quenching it in water. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel A. No. How much do iron and brass, in rods or bands, expand in length when heated to red heat? Scientific American, Volume XXXVI., No. 8, February 24, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. The wine test sometimes employed is prepared in the following manner:—Mix equal parts of finely powdered sulphur and of slacked quick-lime, and expose it to a red heat for twenty minutes. A Treatise on Adulterations of Food, and Culinary Poisons Exhibiting the Fraudulent Sophistications of Bread, Beer, Wine, Spiritous Liquors, Tea, Coffee, Cream, Confectionery, Vinegar, Mustard, Pepper, Cheese, Olive Oil, Pickles, and Other Articles Employed in Domestic Economy During the process, however, the quartz is apt to get rotten, especially if the temperature has been anything approaching a full red heat. On Laboratory Arts Consequently, it is better to reduce it by igniting at a red heat in a current of hydrogen and to weigh it as metallic cobalt. A Text-book of Assaying: For the Use of Those Connected with Mines. Where furnaces are used, we recommend preheating the tools to a red heat in one furnace before putting them in a white hot furnace. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel At 12 miles above the surface of the Earth the hull temperature indicators showed the hind part of the hull at red heat. Space Tug If the adulteration has been effected by means of clay, the obtained precipitate, on exposure to a red heat in the bowl of a common tobacco-pipe, acquires a brick hardness. A Treatise on Adulterations of Food, and Culinary Poisons Exhibiting the Fraudulent Sophistications of Bread, Beer, Wine, Spiritous Liquors, Tea, Coffee, Cream, Confectionery, Vinegar, Mustard, Pepper, Cheese, Olive Oil, Pickles, and Other Articles Employed in Domestic Economy Many years ago I prepared my own hard rouge by precipitating ferrous sulphate solution by aqueous ammonia, washing the precipitate, and heating it to a red heat. On Laboratory Arts A speise of this kind, fused and exposed at a red heat to air, first loses arsenide of iron by oxidation. A Text-book of Assaying: For the Use of Those Connected with Mines. Harden at a dull red heat, about 1,300°F. A clean coal or coke fire, or a good muffle-gas furnace will give best results. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel It was compressed to white heat at the entering surface, and the metal plating went to bright red heat at that point. Space Tug The precipitate being washed, dried, and exposed to a red heat, and weighed, nine-tenths of its weight indicate the weight of protoxide of iron contained in the water. A Treatise on Adulterations of Food, and Culinary Poisons Exhibiting the Fraudulent Sophistications of Bread, Beer, Wine, Spiritous Liquors, Tea, Coffee, Cream, Confectionery, Vinegar, Mustard, Pepper, Cheese, Olive Oil, Pickles, and Other Articles Employed in Domestic Economy Soldering at a red heat by means of spelter is called brazing. On Laboratory Arts The ignition should be performed carefully at not above a low red heat. A Text-book of Assaying: For the Use of Those Connected with Mines. Certain other operations gave them something which looked very much like iron, but which would harden after quenching from a red heat. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel You can weld metals together with powder-metallurgy powder at less than red heat. Space Tug All around them, however, the volcanic vapours were steaming up from innumerable crevices, and the hot lava pouring out, moving slowly, with a dull red heat. Blackwood's Edinburgh Magazine - Volume 61, No. 376, February, 1847 The art of brazing is applied to metals which will withstand a red heat, and the joints so soldered have the strength of brass. On Laboratory Arts On exposure to the air at a red heat the arsenic and the metal simultaneously oxidize. A Text-book of Assaying: For the Use of Those Connected with Mines. Sulphur is of most trouble to rolling and forging operations when conducted at a red heat. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel Hadn't he confided to me with a fierce, red heat on his forehead how his father had told him he wasn't "half a boy," because he had turned giddy climbing a high tree? My Young Days As she was making this speech, her temper seemed to rise, and to become hot, and then hotter, till it glowed with a red heat. Phineas Finn The Irish Member The temperature is gradually raised to a bright red heat, when the spelter will be observed to fuse or "run," as it is technically said to do. On Laboratory Arts This is for bodies that will bear a red heat; for those compounds that require a lower temperature the heating in the muffle is omitted. A Text-book of Assaying: For the Use of Those Connected with Mines. Primrose made toast for her father, and Rollo blew the coals to a red heat to hasten the operation. Wych Hazel The face of Gilles de Laval, Lord of Retz, had shone all day with an unholy lustre like that of iron in which the red heat yet struggles with the black. The Black Douglas By-and-by, as the cooling and condensing process continued, the water settled down from the condition of steam into one of a liquid at a dull red heat. Falling in Love With Other Essays on More Exact Branches of Science It is diffused through all animal and vegetable bodies; and may be obtained by exposing them to a red heat. A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery. With a Short Explanation of Some of the Principal Natural Phenomena. For the Use of Schools and Families. Enlarged and Revised Edition. It combines with silica, forming fluid slags; and at a red heat is liquid enough to be absorbed by a cupel; in fact, bismuth may take the place of lead in cupellation. A Text-book of Assaying: For the Use of Those Connected with Mines. It is placed in a retort or oven, and heated to a red heat until the blue flame has passed off, and the flame become red. The Art of Perfumery And Methods of Obtaining the Odors of Plants Not the mad desperation that strikes wildly and at random, but the still red heat that melts and burns and seethes with a steady, unquenchable fierceness. The Atlantic Monthly, Volume 12, No. 73, November, 1863 Of this mixture four parts are taken to one of zircon, thoroughly mixed, and melted in a platinum crucible at a red heat. Scientific American Supplement, No. 441, June 14, 1884. When the metal magnesium is rolled out into a fine ribbon and heated to red heat it burns with a dazzling light. A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery. With a Short Explanation of Some of the Principal Natural Phenomena. For the Use of Schools and Families. Enlarged and Revised Edition. Transfer to a porcelain boat, and reduce in a current of hydrogen at a red heat for half an hour. A Text-book of Assaying: For the Use of Those Connected with Mines. These observations appear to show that the change to anhydrite is a very gradual process at temperatures below a red heat. Scientific American Supplement, No. 794, March 21, 1891 Carbonate of baryta loses its carbonic acid at a red heat, becomes caustic, and colors red litmus paper blue. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations We here doubtless meet with the phenomena of disaggregation undergone by metals at a red heat. The New Physics and Its Evolution The reaction between boron and sulphureted hydrogen only commences at red heat, near the temperature of the softening of glass. Scientific American Supplement, No. 841, February 13, 1892 It fuses at a red heat, and volatilises freely in contact with air. A Text-book of Assaying: For the Use of Those Connected with Mines. At a red heat platinic fluoride decomposes into metallic platinum and fluorine, which is evolved in the free state. Scientific American Supplement, No. 832, December 12, 1891 The carbonate of lime is also infusible, but at a red heat the carbonic acid is expelled, and the residue becomes caustic, appears whiter, and produces an intenser light. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations There was a red heat under her eyes: she had been crying. The Atlantic Monthly, Volume 12, No. 69, July, 1863 Arrange a cast-iron pot in a fire so as to heat it to the temperature of melted lead, or just below a red heat. Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889 The calcining is carried out at a dull red heat, which is gradually increased. A Text-book of Assaying: For the Use of Those Connected with Mines. This oxalate of lime is then heated to a dark red heat in a platinum crucible with lid until the oxalate of lime is converted into carbonate of lime. Scientific American Supplement, No. 821, September 26, 1891 The sulphate of magnesia, at a red heat, loses its water and sulphuric acid, is entirely infusible, and gives now an alkaline reaction. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Then a furnace was placed in the church, containing nine bars of iron of red heat, and the fire was blown till the bars, quivering with heat, glittered in the sight. Alfgar the Dane or the Second Chronicle of Aescendune All my own fire-tests with the Granada emerald corroborate the views of M. Lewy, for in every instance the gem lost its hue when submitted to a red heat. Lippincott's Magazine of Popular Literature and Science Volume 11, No. 27, June, 1873 Fuse at a bright red heat for 10 or 15 minutes. A Text-book of Assaying: For the Use of Those Connected with Mines. Having placed some living ferns in a mass of clay and dried them, he exposed them to a red heat, and obtained thereby striking resemblances to fossil plants. The Story of a Piece of Coal What It Is, Whence It Comes, and Whither It Goes Take two parts of this, and mix it with one part of dry carbonate of potassa, and expose this to a red heat for about half an hour. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Valencia regarded her with a bitter jealousy that was rising from red heat to white. The Doomswoman An Historical Romance of Old California The results obtained were as follows: Loss at 100° C. Loss at red heat. Scientific American Supplement, No. 595, May 28, 1887 When the crucible is at a good red heat, above the fusing point of copper, drop the button of copper into it, and close the furnace. A Text-book of Assaying: For the Use of Those Connected with Mines. It is noteworthy that mere red heat is insufficient in itself to ignite fire-damp, actual contact with flame being necessary for this purpose. The Story of a Piece of Coal What It Is, Whence It Comes, and Whither It Goes In general the operation proceeds best when the substance is kept at a dull red heat. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Yes, the diamond eyes entered everywhere, and into every form but that one where the red heat of revenge might have been expected to shrivel up and harden the issues of tears. Wilson's Tales of the Borders and of Scotland, Volume XXII I know from my own experience, that an author's last work is always his best one, in his own estimate, until it quite loses the red heat of composition. Tanglewood Tales Bring the tube gradually to a red heat, commencing by heating the lime just behind the asbestos plug, and travelling slowly backwards. A Text-book of Assaying: For the Use of Those Connected with Mines. After a few days' exposure to red heat, the iron is converted into splendid steel, which has given such a reputation to that great manufacturing town. James Nasmyth: Engineer; an autobiography The hydrate of baryta melts by a low red heat without losing its water of hydration. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations At one time it had for a little while glowed more brilliantly again, but it speedily reverted to its sullen red heat. The Time Machine Under the same conditions it becomes incandescent in the vapour of sulphur, yielding calcium sulphide and carbon disulphide; the vapour of phosphorus will also unite with it at a red heat. The Project Gutenberg Encyclopedia Volume 1 of 28 Dry and transfer to a weighed porcelain crucible, mix with a little pure sulphur, and ignite at a red heat for 5 or 10 minutes in a current of hydrogen. A Text-book of Assaying: For the Use of Those Connected with Mines. They are placed in the muffle for a period varying from twenty to thirty minutes, during which time they have acquired a bright red heat. The Story of the Invention of Steel Pens With a Description of the Manufacturing Process by Which They Are Produced It is in the pure state infusible, and at a red heat produces such a splendid and vivid white light that the eyes can scarcely endure it. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations The mass was then submitted to a red heat for half an hour. Journal of an Expedition into the Interior of Tropical Australia The shells are then to be well rinsed in water, placed in a crucible, and heated to a red heat for about four hours. Scientific American Supplement, No. 497, July 11, 1885 The precipitate is filtered off, washed with boiling water, dried, ignited at a red heat, and weighed when cold. A Text-book of Assaying: For the Use of Those Connected with Mines. In those the calx has previously acquired the intended colour, a colour which bears a red heat without injury, and all that remains is to fix it on the piece by a vitreous flux. The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation The carbonate of strontia fuses a little at a red heat, swells, and bubbles up like cauliflower. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Darkness is only smoke that hangs suffocatingly over the low red heat of the sunken day. The Trespasser "Absorbs oxygen readily, when brought to a red heat," said Mr. Arcubus, abstractedly, as he pulled at his long fingers and made their joints crack. The Atlantic Monthly, Volume 05, No. 29, March, 1860 The salt bears a low red heat without breaking up. A Text-book of Assaying: For the Use of Those Connected with Mines. Isn't a red heat that you can see, and that warms you, better than a white heat that blinds you? Tales and Novels — Volume 09 It changes red litmus to blue, and at a low red heat it melts. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations The circuit is thus closed for an instant, the spiral is raised to a red heat, and lights the gas, and the flame rises and finally lights the burner. Scientific American Supplement, No. 362, December 9, 1882 The explosion rang out with startling force in the narrow hull of the ship, the lint received the fire and glowed with the sparks into spots of red heat. Cord and Creese Remove the glass; evaporate to dryness, and ignite, at first gently over a Bunsen burner, and afterwards in the muffle at a red heat. A Text-book of Assaying: For the Use of Those Connected with Mines. We cannot see very well, moreover, how this immense grate, lying on the ground, was raised to a red heat and kept at such a temperature. Scientific American Supplement, No. 360, November 25, 1882 Alumina is quite unalterable in the fire; the hydrate, however, losing its water at a low red heat. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations The sulphuric acid attacks the manure energetically, and much facilitates the incineration, which may be effected at a dark red heat. Scientific American Supplement, No. 362, December 9, 1882 There is a white and a red heat; a sullen glow as well as a crackling flame; cold-blooded as well as hot-blooded fanaticism. Literary Remains, Volume 2 It is next placed in the muffle, and, after two or three minutes at a red heat, it is removed and allowed to cool in the desiccator before weighing. A Text-book of Assaying: For the Use of Those Connected with Mines. Each pit is covered with a separate lid at the floor level, and after having been well dried and brought to a red heat by the insertion of hot ingots, they are ready for operation. Scientific American Supplement, No. 360, November 25, 1882 The alkalies and their salts melt at a low red heat. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations A very fine wire will attain a red heat through a very weak current, but it would be very brittle, and subject to break at the least accident. Scientific American Supplement, No. 362, December 9, 1882 This is an important point, as it renders the production of a continuous bright red heat a matter of the greatest ease, even in crucibles of a comparatively large size. Scientific American Supplement, No. 430, March 29, 1884 Put these in the furnace at a red heat, cover the crucible, and gradually raise the temperature until the whole charge has melted down and is in a state of tranquil fusion. A Text-book of Assaying: For the Use of Those Connected with Mines. In order to test the constancy of the battery, a red heat was maintained in a platinum-iridium wire by the current for six weeks, both day and night. Scientific American Supplement, No. 363, December 16, 1882 It melts at a low red heat, and volatilizes at a higher temperature. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Before any cooking is done in a Japanese kitchen, the little charcoal fire is first blown to a bright red heat with that most useful and simple household utensil called a hifukidake. Glimpses of Unfamiliar Japan Second Series Unlike either steel or cast iron, wrought iron does not harden when cooled suddenly from a red heat. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon On evaporating these solutions it is volatilised, although the anhydrous oxide is "fixed" at a red heat. A Text-book of Assaying: For the Use of Those Connected with Mines. Unfortunately I had forgotten a sulphur-still; and the engineer vainly attempted to extract the ore by luting together two iron mortars, and by heating them to a red heat. The Land of Midian — Volume 1 It will not volatilize at a low red heat, nor will it decompose. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Weigh a large soup bone; put it on a hot, clear fire until it is at a red heat. A Practical Physiology Now heat the tray and bone with the work in an oven to a bright red heat for 30 minutes to an hour and then plunge the work into water or brine. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon Heat, at first, gently; and then at a red heat for from forty to sixty minutes. A Text-book of Assaying: For the Use of Those Connected with Mines. "Not if I have to die on the line to stop it!" glowed Dalzell at red heat. Dave Darrin's Third Year at Annapolis Leaders of the Second Class Midshipmen Heated at a continued dull red heat, it turns blue. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations My nature glows at thy dear name, With deep, red heat, like yonder ball, It shines with constant, ruddy flame; It shines for you, but tinges all. Canada and Other Poems Iron and steel at a red heat oxidize rapidly with the formation of a scale and possible damage to the metal. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon Ignited alumina is difficultly soluble in acids; it is not reduced by hydrogen at a red heat. A Text-book of Assaying: For the Use of Those Connected with Mines. Calculation shows that a body moving through the air at a velocity of about a mile per second will be brought, superficially, to the temperature of ``red heat'' by friction with the atmosphere. Curiosities of the Sky It melts at a bright red heat, is more difficult than silver to fuse, but fuses more readily than gold. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Some of them glowed like huge castles wrapped in fire, others with the dull red heat of burning coal. Jess The greater the time taken for gradual cooling from the red heat, the more perfect will be the results of the annealing. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon The solution is then evaporated with an excess of hydrochloric acid, ignited at a low red heat, and weighed. A Text-book of Assaying: For the Use of Those Connected with Mines. The difference between coal which flames and coal which burns only with a red heat, is chiefly that one has been baked and crushed more than the other. The Fairy-Land of Science Go to TOC These two metals are volatilized at a temperature lower than that of a red heat, and produce, therefore, no reactions with borax and microcosmic salt. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations He answered that he had never felt more comfortable, and that he had sat in the red heat as if he had been in cool dew. Household Tales by Brothers Grimm While steel is annealed by slow cooling, copper or brass is annealed by bringing to a low red heat and quickly plunging into cold water. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon In some cases a prolonged red heat is required; whilst with crystallised salts it is sometimes given off at the ordinary temperatures. A Text-book of Assaying: For the Use of Those Connected with Mines. His jealousy, fanned to red heat by the discovery of her earlier defection, was enhanced fourfold by the thought of this last adventure. The Spoilers After a short time, the temperature is increased to a low red heat, at which the arsenious acid is reduced and the metallic arsenic sublimed, and which re-condenses in the neck of the bulb. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations In the short space he stood there helplessly in the red heat of the fire the desperateness of the situation seared itself like the hot flame itself in his brain. The Golden Snare In the case of cast iron and steel the temperature at the point to be welded should be great enough to produce a dull red heat. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon Evaporate to dryness in an iron dish and ignite at a low red heat in a crucible. A Text-book of Assaying: For the Use of Those Connected with Mines. The hot blocks, which are protected in winter, are exposed to the sun in summer, and are heated nearly to red heat by the rays concentrated upon them by a series of large mirrors. The Dominion in 1983 The carbonate of magnesia is infusible, loses its carbonic acid at a red heat, and shrinks a little. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations At the back of his words some torment burned at red heat, remorselessly. The Red Planet Bends may be made without kinking if the tube or pipe is brought to a full red heat all the way around its circumference and at the place where the bend is desired. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon It may be subjected to a red heat without being apparently affected, but at a higher temperature it slowly burns away. A Text-book of Assaying: For the Use of Those Connected with Mines. This mould is carefully dried, and then gradually heated to a red heat. On the Economy of Machinery and Manufactures It is very hard at common temperatures, but soft and yielding at a red heat. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Its interior is in all likelihood a mass of molten matter far above a red heat, which is surrounded by a comparatively cool, yet, to our measure, extremely hot, vapor. Side-Lights on Astronomy and Kindred Fields of Popular Science Tubing or pipes may be bent while being held between two flat metal surfaces while at a bright red heat. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon As to the heat required, silicates may be produced in the moist way at about incipient red heat, whereas to form the same in the dry way would require a much higher temperature. The Student's Elements of Geology Steel is crystalline in structure, and when suddenly cooled from red heat by plunging into cold water, becomes hard and brittle. An Introduction to Chemical Science Lime and its hydrate are infusible, but produce at a strong red heat a very intense and splendid white light, while the hydrate loses its water. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations If the quicksilver is subjected to a red heat in the large lead-pot, it will evaporate. The Albert N'Yanza, Great Basin of the Nile Steel is usually welded at a bright red heat because of the danger of oxidizing or burning the metal if the temperature is carried above this point. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon The operator had been preparing a quantity of glowing charcoal, which was at a red heat. Wild Beasts and Their Ways, Reminiscences of Europe, Asia, Africa and America — Volume 1 When red-hot they were withdrawn, the little mound of earth covering the two pieces of iron being still in place but having been brought also to a red heat. The Bontoc Igorot At a red heat, it oxidizes slowly and decomposes water; at a white heat it burns with a red flame. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Tucker laughed softly to himself as he watched the apple revolving in the red heat on its bit of string. The Deliverance; a romance of the Virginia tobacco fields Preheating.—The ends to be welded are brought to a bright red heat by introducing the flame from a torch through the preheating gate. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon The curtain rose when we had got her at a red heat. No Name These Bear Creek fathers could not keep their ire at red heat. The Virginian, a Horseman of the Plains After the metal has been in the fire long enough to reach a red heat, it is removed temporarily and, if small enough in size, the ends are dipped into a box of flux. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon For welding iron, a flux of white sand is usually used, this material being placed on the metal after it has been brought to a red heat in the fire. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon The pipe must be kept at full red heat with the flames from one or more torches and must not be hammered to produce the bend. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon From this red heat the mass of metal should grow cooler as the distance from the weld becomes greater, so that no great strain is placed upon any one part. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon The heat is continued until the mould is thoroughly dried and the parts to be joined are brought to the red heat required. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon
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