| 单词 | guncotton |
| 例句 | Over the years, many people have contended that this second explosion was very likely caused by secret stores of volatile munitions — like aluminum powder or guncotton — that detonated within the ship’s holds. Erik Larson’s ‘Dead Wake,’ About the Lusitania 2015-03-05T05:00:00Z Cellulose sulphates are one, and possibly the main, cause of instability in guncotton, and it is highly desirable that they should be completely hydrolysed and removed in the washing process. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z "I can only just hear the row outside," added the midshipman, as the muffled reports of the guncotton explosions showed that the demolition party were doing their work thoroughly. The Fight for Constantinople A Story of the Gallipoli Peninsula 2011-10-04T02:00:17.837Z Very many substances and mixtures have been proposed for smokeless powder, but the two substances, guncotton and nitroglycerin, have for the most part kept the field against all other combinations, and for several reasons. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z Batteries had been placed, everything had been done within the time named, and had the mines been charged with dry guncotton any ship running into them would undoubtedly have been blown up. The Battleship Boys at Sea Two Apprentices in Uncle Sam's Navy 2011-06-06T02:00:06.803Z A charge of 412 ℔ of guncotton, calculated as being equivalent to the above charge of powder and placed under the same conditions, made a crater of 14 ft. radius. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" 2011-04-22T02:00:08.637Z The chemical composition and constitution of guncotton has been studied by a considerable number of chemists and many divergent views have been put forward on the subject. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z Propellant Explosives.—The chief propellants arc nitrocellulose, also called nitrocotton or guncotton, and nitroglycerine. The New Gresham Encyclopedia Volume 4, Part 3: Estremoz to Felspar 2011-04-14T02:00:59.373Z In burning the nitroglycerin is protected from detonation by the gelatinous state of the guncotton, but still adds to the rate of burning and produces a higher temperature. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z Inside the sphere was a can of wet guncotton, with an opening left for a charge of dry guncotton, which is put in place when the mines are being laid for an actual enemy. The Battleship Boys at Sea Two Apprentices in Uncle Sam's Navy 2011-06-06T02:00:06.803Z They found each other's hands through the choking fumes; Allard's fingers scorched by the guncotton, Stanief's bruised and bleeding from the force used to open the machine. The Game and the Candle 2011-04-03T02:00:16.907Z Other products were soluble in the ether-alcohol mixture: they were less highly nitrated, and constituted the so-called collodion guncotton. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z Cordite is fifty-eight parts nitroglycerin, thirty-seven parts guncotton, five parts mineral jelly, and, of course, acetone is used as solvent. The Three Sapphires 2011-02-07T03:00:24.770Z For detonating dynamite, guncotton, &c. , it is generally employed without admixture of a diluent. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z These are crumbling in places, and the Pioneers might destroy the bastion and breach the wall with a bag or two of guncotton. The Unveiling of Lhasa The prelude to this third bombardment of Santiago was a second trial of the Vesuvius at midnight on the fifteenth, when she sent three more 250-pound charges of guncotton into the fortifications. The Boys of '98 The explosive wave from the dry guncotton primer is in fact better responded to by the wet compressed material than the dry, and its detonation is somewhat sharper than that of the dry. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z Shell could not vanquish it, so a charge of guncotton was exploded immediately beneath it; then the old warship gave a lurch. The Hero of Garside School On contact with the guncotton a jelly is formed which stiffens as the evaporation of the gelatinizing agent proceeds, and finally hardens when the evaporation is complete. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z They had no artillery or guncotton or materials for a siege, but they hoped to scale the wall and annihilate the garrison that held it. The Unveiling of Lhasa Blocks of buildings were blown up with powder, guncotton, and dynamite, or torn down by men armed with axes and ropes. Complete Story of the San Francisco Horror Carefully prepared guncotton after washing with alcohol-ether until nothing more dissolves may require to be heated to 180-185� C. before inflaming. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z From these experiments it appeared that the guncotton and cotton-powder were practically equal as producers of sound. Fragments of science, V. 1-2 In fact guncotton in the colloid state may be hammered on an anvil, and, as a rule, only the portion struck will detonate or fire. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z However, by creeping along under cover of the wall, Captain Shepherd and Lieutenant Garstin were able to lay the guncotton and light the fuse for another explosion. The Unveiling of Lhasa A similar series was carried out with the guncotton in the condition in which it was directly obtained from the ester reaction. Researches on Cellulose 1895-1900 Assuming the above formula to represent guncotton, there is sufficient oxygen for internal combustion without any carbon being left. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z These are some of the physical reasons why guncotton might be regarded as a promising fog-signal. Fragments of science, V. 1-2 The Vieille powder, invented in 1887 and adopted in France for a magazine rifle, consisted of gelatinized guncotton with a little picric acid. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z Accordingly, Lieutenant Gurdon, 32nd Pioneers, was sent to join them with a box of guncotton. The Unveiling of Lhasa In a slightly diluted acetone of such composition, the guncotton is instantly attacked, the action being quite different from the gelatinisation which precedes solution in the undiluted solvent. Researches on Cellulose 1895-1900 The gaseous mixture obtained by burning guncotton in a vacuum vessel contains steam, carbon monoxide, carbon dioxide, nitrogen, nitric oxide, and methane. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z Here guncotton, exploded in the open, forms the most appropriate source of sound. Fragments of science, V. 1-2 Later a mixture of two varieties of guncotton gelatinized together was used. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z Early electric primers, by the way, were no great departure from the friction primer; the wires fired a bit of guncotton, which in turn ignited the powder in the primer tube. Artillery Through the Ages A Short Illustrated History of Cannon, Emphasizing Types Used in America There is, however, no solution of the guncotton and practically no tendency of the grains to cohere. Researches on Cellulose 1895-1900 Dilute mineral acids have little or no action on guncotton. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z They developed the processes of producing cellulose from wood pulp to take the place of cotton for making guncotton, and certain forms of wood fiber and paper were used in the textile trades. Kelly Miller's History of the World War for Human Rights In addition to guncottons other explosive or non-explosive substances are contained in some of these powders. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z Dip plain cotton into a mixture of nitric and sulphuric acids and let it dry, and we have that terrible explosive, guncotton. The Breath of Life Some very good bombs were made from jam-tins with a wad of guncotton, and filled up with all manner of missiles. "Over There" with the Australians Alkali sulphohydrates reduce guncotton, or other nitrated celluloses, completely to cellulose. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z Nitric acid, which is necessary to the manufacture of guncotton, for many years was made principally with saltpeter and sulphuric acid. Kelly Miller's History of the World War for Human Rights With the modern colloid propellants the most dangerous operations are the chemical processes in the preparation of nitroglycerin, the drying of guncotton, &c. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z Why not solve both difficulties together by dissolving the guncotton in the nitroglycerin and so get a double explosive? Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries "Something like two tons and a half of guncotton in this old shed," smiled Hal Hastings. The Submarine Boys' Lightning Cruise The Young Kings of the Deep A characteristic difference between guncotton and collodion cotton is the insolubility of the former in ether or alcohol or a mixture of these liquids. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z The largest percentage of explosives used in modern gunnery are those formed of nitrated cellulose—guncotton. Kelly Miller's History of the World War for Human Rights Presently the young cadets themselves came riding into camp, bringing with them pieces of guncotton, and showing by the state of their ragged uniforms the hand-to-hand nature of the struggle that had taken place. With Steyn and De Wet Since the starches and sugars belong to the same class of compounds as the celluloses they also can be acted upon by nitric acid with the production of explosives like guncotton. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Chloroform, nitrous oxide gas, and ether had been placed at the service of the physician in saving life, and the revolver, guncotton, and nitroglycerine added to the agencies for slaughter. Edison, His Life and Inventions When quite dry guncotton is easily detonated by a blow on an anvil or hard surface. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z The same type of missile, this, that is used by the submarine and the destroyer—a long, cigar-shaped cylinder, operated by compressed air driving a propeller, and equipped with a warhead filled with guncotton. Kelly Miller's History of the World War for Human Rights "For England!" completed Caradoc Smith, and fetched down a furious doubled-handed blow on the primer of the big steel chamber packed with guncotton. The Cruise of the Dry Dock This, then, might be called the beginning of the guncotton or nitrocellulose period—or, perhaps in deference to the caveman's club, the second cellulose period of human warfare. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries I took a lot of ticker paper tape, turned it into guncotton and got up an engine with an arrangement whereby I could feed this gun-cotton strip into the cylinder and explode it inside electrically. Edison, His Life and Inventions Compressed dry guncotton is easily detonated by an initiative detonator such as mercuric fulminate. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z It is made of guncotton and nitroglycerine and acetone is one of the chemicals required in its manufacture. Kelly Miller's History of the World War for Human Rights In composition it is practically guncotton and so a high explosive. The Film Mystery Better, doubtless, to call it the "high explosive period," for various other nitro-compounds besides guncotton are being used. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries So I conceived of an engine employing guncotton. Edison, His Life and Inventions Dry guncotton heated in ammonia gas detonates at about 70�, and ammonium hydroxide solutions of all strengths slowly decompose it, yielding somewhat complex products. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z Explosives, such as gunpowder and guncotton, are also ignited by the electric spark from an induction coil or the incandescence of a wire. The Story of Electricity Sooner than that, I would sweep out the guncotton shed, or be one of Bodger's barmaids. Major Barbara The nitration is not carried so far as to produce the guncotton used in explosives but only far enough to make a soluble nitrocellulose or pyroxylin. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries A hole was to be made large enough to hold fifty pounds of guncotton, whose expansive force is four times that of gunpowder. A Journey to the Interior of the Earth Generally speaking, the lower the nitrogen content of a guncotton, as found by the nitrometer, the higher the percentage of matters soluble in a mixture of ether-alcohol. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z For some reason the fuse used for the guncotton was defective, and half an hour elapsed before the explosion destroyed the howitzer. The Great Boer War Around the fuse department, where all day girls and women handled guncotton and high-explosive powder, a special guard was posted, day and night. Dangerous Days The trouble with the dissolved guncotton was that it could not be molded. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Every pound of guncotton did its work, and though the ruins burned, it was but feebly. The San Francisco calamity by earthquake and fire In default of fulminate, he could easily obtain a substance similar to guncotton, since he had azotic acid at his disposal. The Mysterious Island Engines pumping brine through Fort Mason from the bay completed the little work that the guncotton had left, but for three days the haggard-eyed firemen guarded the flickering ruins. The San Francisco calamity by earthquake and fire With them they brought a ton and a half of guncotton. The San Francisco calamity by earthquake and fire But it would be easy to make some guncotton, or even ordinary powder, as we have azotic acid, saltpeter, sulphur, and coal. The Mysterious Island They could have forced their explosives farther in the burning section, but not a pound of guncotton could be or was wasted. The San Francisco calamity by earthquake and fire |
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