| 单词 | line of force |
| 例句 | In a way, the book is about the complex lines of force and influence in male friendships, the egging each other on and ranking each other out. Book Review: The Innovators by Walter Isaacson 2014-10-02T04:00:00Z Her motives for reversing the line of force in “Salt” are no longer available to her. Solving the Many Mysteries of What Became ‘Carol’ 2015-11-13T05:00:00Z Like the house, the novel is flawlessly constructed, revealing the careful plan of its reflections and symmetries, the lines of force hidden in its surfaces and its concealed architecture. The Glass Room by Simon Mawer 2010-04-24T23:08:00Z Mostly images of sports broadcasts, the drawings seem to indicate minuscule lines of force. A first solo exhibition in L.A., drawing on Howardena Pindell's long career 2015-10-08T04:00:00Z The magnetic lines of force at the surface create many observable effects, including sunspots, which are dark regions where solar plasma cools and emits less light than surrounding areas. How to Watch the Northern Lights and Other Awesome Auroras 2023-10-13T04:00:00Z These are located along the lines of force and line up along the long axis of the bone. Fundamentals of Biology 2015-01-01T00:00:00Z The evidence suggested that a vast number of charged atomic particles must be circulating around Jupiter, spiraling around the lines of force of a magnetic field associated with the planet. Astronomy 2016-10-13T00:00:00Z Once a line of force begins, he keeps it going, even adding strength to it, until it meets an immovable object or exhausts itself in open space. Steven Spielberg at Seventy 2017-01-08T05:00:00Z The price paid for a tokamak’s simplicity, though, is that the field weakens towards its outside edge, and its lines of force tend to drift. Stellar work 2015-10-22T04:00:00Z Cold war lines of force met here at the heart of the “third way”. Castro, cows and the Summer of Love: how pop art became political dynamite 2015-09-04T04:00:00Z Imparting force on the planet should change the state of magnetic flux instantly throughout that line of force. Scientists Report Finding Reliable Way to Teleport Data 2014-05-29T04:00:00Z Things as remote as the magnetic lines of force of an electric current and the stream-lines of a frictionless liquid vortex enter in this way into a peculiar relationship of similarity. Popular scientific lectures 2012-04-24T02:00:17.273Z If the rails be connected by a wire, and the slider be moved so as to cut across the lines of force, a current will be produced in the circuit. Lord Kelvin An account of his scientific life and work 2012-04-06T02:00:32.097Z This simple combination creates magnetic lines of force that corkscrew around the plasma, confining it as a smaller doughnut-within-the-doughnut. Stellar work 2015-10-22T04:00:00Z This obviously follows from the passing of the lines of force across the armature conductors. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z A sphere cut from a crystal will when suspended in an electro-magnetic field set itself so that the axis of maximum induction is parallel to the lines of force. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z Of his conception of lines of force filling the whole of space, we shall have more to say presently. Heroes of Science: Physicists 2012-01-17T03:00:17Z And just as the lines of flow of heat meet the spherical isothermal surface at right angles, so the lines of force in the electrical case meet the equipotential surface also at right angles. Lord Kelvin An account of his scientific life and work 2012-04-06T02:00:32.097Z There can, therefore, be no electrostatic strain and no lines of force within the material of a conductor where the electric field has become steady. 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 The zone in which a magnetic influence occurs is called the magnetic field, and this force can be graphically shown by means of imaginary lines, which are termed “lines of force.” Aviation Engines Design?Construction?Operation and Repair 2011-12-04T03:00:04.777Z To remember this, you might compare the magnetic lines of force that arrange the iron filings to the contour strips in a farmer's field. Electricity for the 4-H Scientist Idaho Agricultural Extension Service Bulletin 396, June, 1962 2011-11-18T03:00:30.487Z The action at any place could then be expressed in terms of the lines of force that existed there, the electrifications by which these lines were produced being left out of consideration. Heroes of Science: Physicists 2012-01-17T03:00:17Z When a coil rotates between the poles of a magnet, the wire moves across the lines of force and a current is induced in the coil if the circuit is closed. The Story of Great Inventions 2011-10-05T02:00:16.353Z Magnetic Effect.—An electric current flowing in a wire causes it to be surrounded by a magnetic field, which consists of lines of force encircling the wire. 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 In this simple machine the lines of force exist between the poles of a horseshoe magnet. Aviation Engines Design?Construction?Operation and Repair 2011-12-04T03:00:04.777Z There is a magnetic field or lines of force around any wire carrying an electric current. Electricity for the 4-H Scientist Idaho Agricultural Extension Service Bulletin 396, June, 1962 2011-11-18T03:00:30.487Z Faraday, in his lines of force, saw, as it were, the lines along which the displacements of Cavendish's fluid took place. Heroes of Science: Physicists 2012-01-17T03:00:17Z In a nutshell, the field can be thought of as a distribution of lines of force that vaguely resembles a weather map of winds. Physicists Devise Perfect Magnetic Shield 2011-09-22T20:14:51Z Any number of such lines can be traced; the space filled by these lines of force is called the magnetic field. 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 As stated on an earlier page, if the lines of force in the magnetic field are cut by a suitable conductor an electrical impulse will be produced in that conductor. Aviation Engines Design?Construction?Operation and Repair 2011-12-04T03:00:04.777Z This proved that the wire created a magnetic field or lines of force when we passed electricity through it. Electricity for the 4-H Scientist Idaho Agricultural Extension Service Bulletin 396, June, 1962 2011-11-18T03:00:30.487Z When the primary current ceases, all these lines of force vanish. Heroes of Science: Physicists 2012-01-17T03:00:17Z In the other type, or movable coil galvanometer, the coil is suspended and the magnet fixed; hence the coil tends to set itself with its axis parallel to the lines of force of the magnet. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z Maxwell’s “corkscrew rule” for relative directions of current and lines of force. 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 There is a unity between the light and the eye that indicates their origin in the same lines of force that now give sight to the brain life. The Universe a Vast Electric Organism 2011-06-09T02:00:22.450Z Around the poles of each there are magnetic fields, invisible lines of force that attract and repel. Electricity for the 4-H Scientist Idaho Agricultural Extension Service Bulletin 396, June, 1962 2011-11-18T03:00:30.487Z The tendency of lines of force to shorten themselves and repel one another laterally results in a force tending to force the conductor vertically downwards. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z If one needle is slightly weaker than the other, the suspended system will set itself with some axis parallel to the lines of force of a field in which it is placed. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z Compass needles may also be used to show the direction of the lines of force at any point. 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 From these distributers the lines of force spread out in both vertical and horizontal planes and may be made to extend over an area of several miles. The Universe a Vast Electric Organism 2011-06-09T02:00:22.450Z Then since the generating lines of the tube are lines of force, the component of the electric force perpendicular to the curved surface of the tube is everywhere zero. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z If, however, the currents are in opposite directions then the lateral pressure of the similarly contracted lines of force between them pushes the conductors apart. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z The spaceship began to move slowly, while Oberfield and Caton probed for the lines of force which would lead to the station. The Secret of the Ninth Planet The lines of force must be thought of as closed loops linked with the current. 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 Then they would assume their normal velocity of revolution on their axis, and their orbital motion along evenly balanced lines of force, without friction or change, for countless ages. The Universe a Vast Electric Organism 2011-06-09T02:00:22.450Z The iron of the block affords a return path for the lines of force. Cyclopedia of Telephony and Telegraphy, Vol. 2 A General Reference Work on Telephony, etc. etc. We know that these lines are currents, or lines of force, for that force produces sensible effects, and we measure it by the movements of the needle. The Philosophy of the Weather And a Guide to Its Changes The lines of force had finally been traced. The Secret of the Ninth Planet What is the distribution of the lines of force? 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 That brain tissue is the result of the action indirect of the electric energy that is sweeping the planet in ceaseless lines of force and power. The Universe a Vast Electric Organism 2011-06-09T02:00:22.450Z The cleavages and lines of force are the following. Modern Painters, Volume IV (of V) Doubtless such lines of force exist around the earth and the magnetic poles. The Philosophy of the Weather And a Guide to Its Changes There was no doubt that a line of force had been channeled outward to a point in space that now proved to be that of a planet. The Secret of the Ninth Planet The lines of force form continuous closed curves running through the interior of the coil; they issue from one end and enter into the other end of the coil, as shown in fig. 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 When the receiver is silent or gives only faint sounds, it indicates that the lines of force are deflected from their normal course. The Universe a Vast Electric Organism 2011-06-09T02:00:22.450Z That luminosity in action means something—some conversion of energy, electrical, perhaps, to carry them on lines of force of which we know nothing as yet. Astounding Stories, May, 1931 There are also longitudinal lines of force existing and active, between the poles, and extending from one side of the center to the other, occupying nearly one third of the magnet. The Philosophy of the Weather And a Guide to Its Changes As near as I can get it, the Rogans, by this peculiar red metal alloy, manage to trap and divert the permanent lines of force, the magnetic field, of Jupiter itself. The Red Hell of Jupiter What does the expression “cut lines of force” mean? 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 Thus the number of lines of force passing through the surface F of the sphere into its interior is proportional to ρ0V. Relativity: The Special and General Theory Human will power can alter the rate of vibration of the line of force, or etheric wave. Astounding Stories of Super-Science, November, 1930 Recent discoveries have shown that the magnetic force is exerted in lines and currents; that such currents, as physical lines of force, surround magnets, and currents of electricity. The Philosophy of the Weather And a Guide to Its Changes It will indicate the direction of the lines of force. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use Upon the rate at which each conducting loop is filled and emptied of lines of force and the number of such loops with their grouping or connection. 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 For unit area of the surface of the sphere the number of lines of force which enters the sphere is thus proportional to ρ0V/F or to ρ0R. Relativity: The Special and General Theory The electron is formed by the crossing of two lines of force," he said, "and the interaction of positive and negative polarity. Astounding Stories of Super-Science, November, 1930 The lines of force will pass through this. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity The attraction exercised by a magnet on iron may be due to the effort of the lines of force to shorten their paths. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use The long, straight, horizontal arrows joining the two poles of the magnet, represent163 the lines of force which make up the magnetic field between the poles. 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 They followed the direction of the magnetic lines of force, and, forsaking the polar collar of the magnetised sphere, surrounded it like a ruffle. A Popular History of Astronomy During the Nineteenth Century Fourth Edition In actual practice, field magnets of dynamos are worked at densities up to and over 100,000 lines of force to the square inch, and armatures contain several hundred conductors to "cut" these magnetic lines. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine These electrically generated lines of force are similar to those previously known, but they need no matter to sustain them. Life and Matter A Criticism of Professor Haeckel's 'Riddle of the Universe' The energy required to cut the lines of force passed in some mysterious way into the wire. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use The initial position of the loop is taken at right angles to the direction of the lines of force. 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 The nature of the stress is, as Faraday pointed out, a tension along the lines of force combined with an equal pressure in all directions at right angles to these lines. The World's Greatest Books — Volume 15 — Science A wire "cutting" the invisible lines of force, that a magnet is spraying out into the air, becomes "electrified." Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine In this way Faraday mapped out the lines of force, relative not only to single magnets, but also to magnets with poles placed in various positions relatively to poles of other magnets. Aether and Gravitation It follows that a powerful dynamo, or mechanical producer of current, must have strong magnets and a long conductor; and the latter must be moved at a high speed across the lines of force. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use The stress indicated by the lines of force consists of a tension or pull in the direction of their length and a pressure or thrust at right angles to that direction. 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 The great walls of the station felt the clutching lines of force—they began to heat and to strain. The Ultimate Weapon Or, if a magnet could be made with 100,000,000 lines of force, a single wire cutting those lines once in a second would create one volt pressure. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine Thus we see at once why it is the lines of force should be closer together nearer the electrified body than farther away. Aether and Gravitation The core becomes a powerful magnet with external lines of force passing from one pole to the other over and among the turns of the secondary coil. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use This needle indicates the dip or inclination, that is, the angle which it makes with the horizontal plane, due to the fact that in most places the lines of force are not horizontal. 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 Space is, in the physical sense, a fabric woven of the threads of lines of force from every body in the universe, made up of fields and forces. The Ultimate Weapon A wire "cutting" the lines of force of an electro-magnet This is a simple dynamo. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine We have already seen that the sun is an electrified body, possessing its electric field, with its electric lines of force. Aether and Gravitation The strength of the magnet: the stronger it is, the greater the number of lines of force coming from it. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use Each filing becomes a temporary magnet by induction, and sets itself, like the compass needle, in the direction of the line of force of the magnetic field. 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 He had a proximity detector out, which would pick up any radiation caused by the cutting of magnetic lines of force by any object. A Matter of Importance A current of electricity which sets up lines of force at right angles to the body of the wire through which the current is transmitted. Electricity for Boys Then we have the lines of force extending in curved lines E. and W., but in almost straight lines North and South. Aether and Gravitation Therefore lines of force, conductor, and induced current travel in planes which, like the top and two adjacent sides of a box, are at right angles to one another. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use The total number of lines of force in the circuit is known as the magnetic flux. 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 If it did, it would shew undeniably that a physical agency existed in the course of the line of force. Chambers's Edinburgh Journal, No. 448 Volume 18, New Series, July 31, 1852 Magnetic Lines of Force.—It will be noticed that the magnetic lines of force pass through the bar and then go from end to end through the atmosphere. Electricity for Boys Wherever these lines of force are closest together, there the intensity of the magnetic force is at its greatest. Aether and Gravitation The length of the conductor cutting the lines of force: the longer it is, the more lines it will cut. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use The student should verify the lines of force as here given by applying the corkscrew rule. 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 By plotting lines of force I located the source as being in the air of the council hall, almost directly above the table of state. Skylark Three The lines of force proceed from the north pole of one magnet to the south pole of the other. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told We have learned that Aether has an electro-magnetic basis, and it is that very fact which gives rise to the existence of these lines of force. Aether and Gravitation The greater the number of turns, the greater the number of times the lines of force are cut, and the stronger is the current. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use What is the character of the lines of force of a solenoid in which a current is flowing? 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 "Of course it is not surprising that no lines of force were visible, but I thought that your detectors screens would have found them if any such guiding beams had been present." Skylark Three For long distances they used a type of "warping" that made the ship "skip" along the lines of force that permeate all space. Man of Many Minds Thus there is a tension along the lines of force, and a pressure at right angles to them owing to their bulging out sideways. Aether and Gravitation The armature, as the revolving coil is called, is mounted between the poles of a magnet, where the lines of force are thickest. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use It is defined as: the ratio between the number of lines of force per unit area passing through a magnetizable substance, and the magnetizing force which produces them. 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 The earth's normal magnetic field seems to have had superimposed upon it a new field comprised of lines of force nearly parallel to the equator. The Man Who Rocked the Earth The most general opinion seems to be that they are illuminations of the lines of force which undoubtedly circulate round our earth. The Girl's Own Paper, Vol. VIII, No. 355, October 16, 1886 Maxwell's fundamental idea was, that in a magnetic field there is a rotation of the molecule ever going on about the lines of force. Aether and Gravitation The lines of force of the coil and the magnet are now parallel. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use The magnet is so placed that its inter-polar lines of force traverse the disc from side to side. 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 Mr. Bjerknes desired to employ them for reproducing the effects that he had obtained from water, but he found that the lines of force were no longer the same, and that the phenomena were modified. Scientific American Supplement, No. 315, January 14, 1882 He had a nature capable of only one simple line of force, with no radiations or parallels, and that had early resolved itself into the service of the Squire and his house. Evelina's Garden So that from Maxwell's equations and statements we learn that the magnetic lines of force around every planet, and every satellite in space, move with the planets in their orbits round the sun. Aether and Gravitation In modern language, the resistance of the magnetic circuit has been reduced by the introduction of a better magnetic conductor, and the number of lines of force passing through A is proportionately increased. Scientific American Supplement, No. 633, February 18, 1888 To provide a field of magnetic lines or lines of force to be cut by the armature inductors as they revolve in the field. 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 The ring had been polarized, or retained its magnetic energy, and we are now taking out one set of lines and putting in reversely polarized lines of force. Scientific American Supplement, No. 711, August 17, 1889 So long as the coil is in motion, it is cut by a varying number of lines of force, and current is induced in the coil. General Science We have, however, learned that the solar system forms a huge electro-magnetic field, traversed by lines of force, as Maxwell and Faraday suggested. Aether and Gravitation The helices on both axles are so connected that, when energized, they induce magnetic lines of force that flow in the same direction through the magnetic circuit. Scientific American Supplement, No. 623, December 10, 1887 Upon the direction of the lines of force and direction of rotation of the loop. 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 This involves their passage from the iron across the space in the center of the ring, notwithstanding its great resistance to the lines of force. Scientific American Supplement, No. 711, August 17, 1889 As the magnet recedes from the coil, it carries lines of force away with it, this time reducing the number of the lines which cut the coil. General Science It may be asked, how far will these lines of force stretch out into space? Aether and Gravitation In the diagrams of the meta-compounds the dot becomes a heart, in order to show the resultants of the lines of force. Occult Chemistry Clairvoyant Observations on the Chemical Elements The lines of force threading the coil 4 are varied as the gap between the magnet and the armature is varied. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. The bar seems, therefore, to lose its magnetism by gaining it all, and in doing so all the external lines of force moving inward cut the wire. Scientific American Supplement, No. 711, August 17, 1889 The two faces of the cathode seem to emit rays which are deviated in a direction perpendicular to the lines of force by an electric field, and do not seem to be electrified. The New Physics and Its Evolution Any body which is placed in the earth's magnetic field is affected by the lines of force which exist in the magnetic field; for wherever the field exists, there the lines of force exist also. Aether and Gravitation It depends finally on the number of lines of force due to its own current which cut the conductor in the proper direction; this is indicated by β. Scientific American Supplement No. 822, October 3, 1891 The lines of force set up within the core of a helix always have a certain direction. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. We must not forget that even insulators, as well as conductors, cutting lines of force, have the electromotive force developed in them. Scientific American Supplement, No. 711, August 17, 1889 If the field is in the direction of the displacement, they describe helices round the lines of force and the resistance is again augmented, but in different proportions. The New Physics and Its Evolution The lines of force issue from the earth in the northern and southern parts with different but corresponding degrees of inclination, and incline to, and coalesce with each other over the equatorial parts. Aether and Gravitation Removing this matter the lines of force resumed their former direction. Experimental Researches in Electricity, Volume 1 As a result there will still be a good path for the lines of force through the iron of the core and comparatively little change in the number of lines passing through the armature winding. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. I wish now, in closing, to refer briefly to phenomena of moving lines of force, and to the effects of speed of movement. Scientific American Supplement, No. 711, August 17, 1889 To finish the definition of the field, it remains to determine the direction of these lines of force. Scientific American Supplement, No. 470, January 3, 1885 Arguing from experience, we come to the conclusion that each planet must also possess its electric field, which also must have its lines of force, its different potentials at different distances, and its equipotential surfaces. Aether and Gravitation It is permeated by lines of intelligence as the magnetic field is by lines of force. A Librarian's Open Shelf In any case, if the number of lines of force be increased, the current will flow in one way, and if it be diminished the current will flow in the other way. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. It suffices, after a manner, to materialize the lines of force with iron filings, and to act mechanically upon them, and consequently upon the field itself. Scientific American Supplement, No. 530, February 27, 1886 When the current flows through the coil, the two tinned strips of metal are magnetized, and being magnetized by the same lines of force they are both of the same polarity. The Boy Mechanic: Volume 1 700 Things for Boys to Do So that Mercury, Venus, the Earth, Mars, Jupiter, Saturn, Uranus, and Neptune all have their electric fields, with their own lines of force, and with their equipotential surfaces. Aether and Gravitation This pole is separated from the disk by a copper washer, and the disk is thus wholly immersed in the magnetic field, and is traversed by the lines of force radiatingly. Scientific American Supplement, No. 531, March 6, 1886 The lines of force now no longer find path through the center portion of the armature core—that lying at right angles to their direction of flow. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. These results occur in whatever position the spirals are placed relatively to each other, thus proving that there is no interference with or blending of the separate lines of force. Scientific American Supplement, No. 417, December 29, 1883 When iron filings are sprinkled upon a card or a sheet of glass below which a magnet is placed, the filings set themselves—especially if aided by a gentle tap—along the lines of force. Scientific American Supplement, No. 324, March 18, 1882 That is to say, we shall have such phenomena as magnetic fields, magnetic lines of force, magnetic induction, and the production of permanent magnets by electricity. Aether and Gravitation Indeed the resultant force at any point is directly proportional to the rate of fall of potential per unit length along the line of force passing through that point. Scientific American Supplement, No. 288, July 9, 1881 The core of this bobbin and the return path for the magnetic lines of force set up in it are composed of soft iron punchings of substantially E shape. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. There are suspended in this room self-luminous bodies which enable us by their rays or lines of force to see the non-luminous bodies with which we are surrounded. Scientific American Supplement, No. 417, December 29, 1883 For now the lines of force of adjacent strands of the coil merge into one another, and run continuously through the helix from one end to the other. Scientific American Supplement, No. 324, March 18, 1882 Like electric currents or lines of force, or axes of power when placed side by side attract each other. Aether and Gravitation When the lines of force and the equipotential surfaces are straight, parallel, and equidistant, we have a uniform field. Scientific American Supplement, No. 288, July 9, 1881 The magnetizing force of a given helix is that force which tends to drive magnetic lines of force through the magnetic circuit interlinked with the helix. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. There are also radiating in all directions from me while speaking lines of force or sound waves which affect more or less each one of you. Scientific American Supplement, No. 417, December 29, 1883 The lines of force that radiate from the end of the magnet, curve round and coalesce with some of those of the circuit. Scientific American Supplement, No. 324, March 18, 1882 But like magnetic axes of power or lines of force repel each other. Aether and Gravitation The lines of force are necessarily perpendicular to the surface. Scientific American Supplement, No. 288, July 9, 1881 The intensity of a magnetic flux is expressed by the number of magnetic lines of force in a square centimeter or square inch. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. The lines of force of light, heat, and sound can be artificially produced and intensified, and the more intense—they are the more we perceive their effects on our eyes, ears, or bodies. Scientific American Supplement, No. 417, December 29, 1883 The lines of force of the magnet are drawn into the ring and coalesce with those due to the current. Scientific American Supplement, No. 324, March 18, 1882 Where the lines of force were closest together, there the electric or magnetic energy was the greatest and most intense; and where they were the farthest apart, there the field was weakest in energy. Aether and Gravitation He seems to have thought that the magnetic lines of force were rendered luminous, or that the light was magnetized; in fact, he was in a fog, and had no idea of its real significance. Scientific American Supplement, No. 275, April 9, 1881 The quality of material, which permits of a given magnetizing force setting up a greater or less number of lines of force within it, is called its permeability. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. My original object in constructing two large spirals was to ascertain whether the inductive lines of force given out from one source would in any way interfere with those proceeding from another source. Scientific American Supplement, No. 417, December 29, 1883 And the motion will in either case be such as to increase the total number of lines of force that pass through the circuit. Scientific American Supplement, No. 324, March 18, 1882 As the sun is an electro-magnet, therefore, it possesses these magnetic lines of force on all sides, forming a series of magnetic shells. Aether and Gravitation In this field lie what are termed "lines of force." Steam, Steel and Electricity The path followed by the magnetic lines of force is called the magnetic circuit, and, therefore, the magnetic circuit of the magnet shown in Fig. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. For we may picture the field to ourselves as consisting of lines of force. Sidelights on Relativity There is, however, one way of showing the existence of these lines of force; similar, indeed, to that adopted for showing the lines of force in the field surrounding a magnet. Scientific American Supplement, No. 324, March 18, 1882 Not only so, but they coincide with the magnetic shells which the lines of force actually form around a circular and globular magnet, as the earth. Aether and Gravitation It requires an expenditure of energy both to set up and to maintain these lines of force. Beacon Lights of History, Volume 14 The New Era; A Supplementary Volume, by Recent Writers, as Set Forth in the Preface and Table of Contents This means that whether the magnetic density of the lines of force through the air be great or small the number of lines will always be proportional to the magnetizing force. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. In this set, however, an oscillation transformer is used and as the primary coil of it is included in the closed circuit the oscillations set up in it produce strong oscillating magnetic lines of force. The Radio Amateur's Hand Book So far as the reasoning about these mutual actions of magnets and currents is concerned, it would therefore appear that the lines of force are the really important feature to be understood and studied. Scientific American Supplement, No. 324, March 18, 1882 Let us look at these three variations from the standpoint of the magnetic lines of force which exist around the earth, and around every planet. Aether and Gravitation It is the interaction of their lines of force that causes the attractions and repulsions in active movable conductors. Beacon Lights of History, Volume 14 The New Era; A Supplementary Volume, by Recent Writers, as Set Forth in the Preface and Table of Contents The path of the lines of force is indicated by dotted lines. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. Because of the inductance, when a current flows through a circuit it causes the electric energy to be absorbed and changes a large part of it into magnetic lines of force. The Radio Amateur's Hand Book All our reasons about the attractions of magnets could be equally well thought out if there were no corporeal magnets there at all, only collections of lines of force. Scientific American Supplement, No. 324, March 18, 1882 Further, a moving electro-magnet, as the sun for example, carries its lines of force with it, as proved by Maxwell. Aether and Gravitation But to set up these whirls it is not enough that the conducting wire be moved along the lines of force in the field. Beacon Lights of History, Volume 14 The New Era; A Supplementary Volume, by Recent Writers, as Set Forth in the Preface and Table of Contents Obeying a law which has been demonstrated in the laboratory, the particles then follow the lines of force toward the poles. Curiosities of the Sky We know that electromagnetic induction takes place also when a conductor is moved across a magnetic field in such a way that, as the technical term goes, it 'cuts' the field's lines of force. Man or Matter The lines of force of the galvanic field are, indeed, circles or curves which inclose the conducting wire, and their number is proportional to the strength of the current. Scientific American Supplement, No. 324, March 18, 1882 Now these lines of force extend not only east and west, but also north and south, as depicted in Fig. Aether and Gravitation No ill effects when I ventured into the line of force; so I began to experiment with the switches. The Blind Spot The sheaves of light emanating from the poles look precisely like the ``lines of force'' surrounding the poles of a magnet. Curiosities of the Sky If, on the contrary, the wire be moved across the lines of force towards the reader, the induced current will flow oppositely to the arrow. The Story of Electricity Such lines of force run through the magnetic "field" from one pole of the magnet to the other in curves. Scientific American Supplement, No. 324, March 18, 1882 Hitherto we have only dealt with the lines of force proceeding from the sun equatorially, which lines form the plane of the ecliptic. Aether and Gravitation This force, at each point, acts along a certain line, called a line of force. Side-Lights on Astronomy and Kindred Fields of Popular Science From the archaic ice-barrier to the Caspian Sea, a long line of division, permanent since ice and inertia first took possession, divided his lines of force, with no relation to climate or geography or soil. The Education of Henry Adams These effects arise from the circular lines of force around the wire. The Story of Electricity If a small bar of iron be now pushed into the interior of this helix, the lines of force will run through it and magnetize it, converting it into an electro-magnet. Scientific American Supplement, No. 324, March 18, 1882 Now these lines not only represent the path which the electric ray takes in its journey through space, but exactly coincide with the electric lines of force as conceived by Faraday. Aether and Gravitation Then it turns and points in the direction of the lines of force, which may thus be mapped out for all points of the earth. Side-Lights on Astronomy and Kindred Fields of Popular Science The Rhine was more modern than the Hudson, as might well be, since it produced far more coal; but all this counted for little beside the radical change in the lines of force. The Education of Henry Adams We may, perhaps, succeed in restoring her to them, if she is not obstinate: but I trace lines of force in her face which make me sceptical of her tractability.” Jane Eyre Even in the most perfect vacuum these actions still go on, and the lines of force can still be traced. Scientific American Supplement, No. 324, March 18, 1882 If it were possible to move a planet along one of these lines of force, its path would be that of a straight line. Aether and Gravitation Indeed it may be doubted whether the physical theory of lines of force presented itself with any distinctness to his own mind. Faraday as a Discoverer Adams never knew why, knowing nothing of Faraday, he began to mimic Faraday's trick of seeing lines of force all about him, where he had always seen lines of will. The Education of Henry Adams The stronger the current, the more numerous the lines of force that thread themselves through the circuit. Scientific American Supplement, No. 324, March 18, 1882 According to Faraday's mode of regarding the actions in the magnetic field there is a tendency for the lines of force to shorten themselves. Scientific American Supplement, No. 324, March 18, 1882 When a magnet is moved near a circuit near it, it is found that any alteration in the number of lines of force that cross the circuit is accompanied by the production of a current. Scientific American Supplement, No. 324, March 18, 1882 The idea of magnetic fluids, as applied by some, or of Magnetic centres of action, does not include that of the latter kind of transmission, but the idea of lines of force does.' Faraday as a Discoverer The laws of history only repeat the lines of force or thought. The Education of Henry Adams While if the magnet were moved away the decrease in the number of lines of force would result in a transient "direct" current, or one flowing in the positive direction. Scientific American Supplement, No. 324, March 18, 1882 Into this circuit the pole, N, is attracted, the tendency being to draw as many lines of force as possible into the embrace of the circuit. Scientific American Supplement, No. 324, March 18, 1882 While the coil was approaching the lines of force were increasing, and a momentary inverse current was set up, which was immediately succeeded by a momentary direct current as the coil receded from the pole. Scientific American Supplement, No. 324, March 18, 1882 He brooded on magnetic media and lines of force; and the great object of the last investigation he ever undertook was the decision of the question whether magnetic force requires time for its propagation. Faraday as a Discoverer Then it has to return on its trail, and recover, if it can, its line of force. The Education of Henry Adams All State education is a sort of dynamo machine for polarizing the popular mind; for turning and holding its lines of force in the direction supposed to be most effective for State purposes. The Education of Henry Adams There is an important difference, however, to be observed between the case of the lines of force of the current, and that of the lines of force of the magnet. Scientific American Supplement, No. 324, March 18, 1882 He speaks of and illustrates by sketches, the deflection, both convergent and divergent, of the lines of force, when they pass respectively through magnetic and diamagnetic bodies. Faraday as a Discoverer Faraday for a long period used the lines of force merely as 'a representative idea.' Faraday as a Discoverer If his mind were really this sort of magnet, mechanically dispersing its lines of force when it went to sleep, and mechanically orienting them when it woke up -- which was normal, the dispersion or orientation? The Education of Henry Adams The lines of force have their roots in the magnet, and though they may expand into infinite space, they eventually return to the magnet. Faraday as a Discoverer But the lines of force crossing through a circuit are not the same thing as the current of electricity that flows round the circuit. Scientific American Supplement, No. 324, March 18, 1882 In his later researches on magne-crystallic action, the idea of lines of force is extensively employed; it indeed led him to an experiment which lies at the root of the whole question. Faraday as a Discoverer Speculations: nature of matter: lines of force The scientific picture of Faraday would not be complete without a reference to his speculative writings. Faraday as a Discoverer Then he read all the books he could find, and tried in vain to makes his lines of force agree with theirs. The Education of Henry Adams His object is to illustrate the utility of his conception of lines of force. Faraday as a Discoverer Now in the first article it was pointed out that the lines of force of the magnet indicate not only the direction, but the strength of the magnetic forces. Scientific American Supplement, No. 324, March 18, 1882 These considerations will help to clear our way to the conception of the transformations which occur when a wire is moved across the lines of force in a magnetic field. Faraday as a Discoverer The gist of this communication is that gravitating force acts in lines across space, and that the vibrations of light and radiant heat consist in the tremors of these lines of force. Faraday as a Discoverer He covered his desk with magnets, and mapped out their lines of force by compass. The Education of Henry Adams From the external portion of the circuit he passes in idea to the internal, and follows the lines of force into the body of the magnet itself. Faraday as a Discoverer The stronger the pole of the magnet is, the greater will be the number of lines of force that radiate from its poles. Scientific American Supplement, No. 324, March 18, 1882 The current depends solely on the number of lines of force intersected, and when this number is kept constant the current remains constant too. Faraday as a Discoverer His conclusion is that there exist lines of force within the magnet of the same nature as those without. Faraday as a Discoverer |
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