What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 63
Pagina 32
... pole of the earth , it immediately acquires the property of a magnet , its magnetic fluid being drawn or forced from one extremity to the other ; and this effect con- tinues as long as it remains in the same position , one of its ...
... pole of the earth , it immediately acquires the property of a magnet , its magnetic fluid being drawn or forced from one extremity to the other ; and this effect con- tinues as long as it remains in the same position , one of its ...
Pagina 33
... pole , would travel toward the north pole of the earth - and is struck a sharp blow with a hammer , it will become magnetic . Its condition can be tested by presenting its ends to an ordinary compass . If , on the other hand , it is ...
... pole , would travel toward the north pole of the earth - and is struck a sharp blow with a hammer , it will become magnetic . Its condition can be tested by presenting its ends to an ordinary compass . If , on the other hand , it is ...
Pagina 38
... pole was considered to act upon another as if it were an action at a distance and not from point to point in the medium between the attracting poles . It is well to consider these two points of view carefully , for in the present study ...
... pole was considered to act upon another as if it were an action at a distance and not from point to point in the medium between the attracting poles . It is well to consider these two points of view carefully , for in the present study ...
Pagina 39
... poles of the earth . An examina- tion of the terminology of a subject often will show the trend of the subject . We speak to - day of the flow or flux of magnetic induction , and we picture to ourselves this flow as taking place from one ...
... poles of the earth . An examina- tion of the terminology of a subject often will show the trend of the subject . We speak to - day of the flow or flux of magnetic induction , and we picture to ourselves this flow as taking place from one ...
Pagina 41
... poles would attract each other more strongly . The early electricians divided all bodies . into two classes ... pole , instead of in this line , as a bar of iron or steel would do . In the case of electricity and magnetism the ...
... poles would attract each other more strongly . The early electricians divided all bodies . into two classes ... pole , instead of in this line , as a bar of iron or steel would do . In the case of electricity and magnetism the ...
Alte ediții - Afișează-le pe toate
Termeni și expresii frecvente
action alternating current apparatus attraction bodies carbon cathode rays centimetres charged circuit coil of wire conductor connected copper copper wire Crookes tube current of electricity detect direction discharge distance dynamo dynamo machine earth effect elec electric current electric spark electric waves electrical energy electrical machine electro-magnetic electro-magnetic waves electro-motive force employed ether excited experiments Faraday fluid galvanometer glass gravitation horse power Illustrations inch insulated iron J. J. Thomson lamp Leyden jar lines of force lines of magnetic magnetic force manifestations means measure medium metals method mirror molecular molecules motor movement needle obtained ordinary oscillations oxygen pass phenomena phenomenon photograph pipes placed plate polarization pressure produced Prof refraction resistance revolving Ruhmkorff coil self-induction south pole space spark gap spool steam engine storage battery suitable telephone terminals theory tion to-and-fro currents transformations of energy transmitted tric tricity tube velocity vibrations voltaic cell zinc
Pasaje populare
Pagina 2 - Paris. $2.00. 28. THE CRAYFISH : An Introduction to the Study of Zoology. By TH HUXLEY, FRS With 82 Illustrations. $1.75. 29. THE ATOMIC THEORY. By Professor A.
Pagina 1 - Volume XV. of The International Scientific Series. VYNER (Lady Mary). Every day a Portion. Adapted from the Bible and the Prayer Book, for the Private...
Pagina 2 - STUDENTS' TEXT-BOOK OF COLOR; Or, Modern Chromatics. With Applications to Art and Industry. By Professor OGDEN N.
Pagina 302 - ... of our planet, so far as we know it; and nitrogen is very far the predominant constituent of our atmosphere. If the earth is a detached bit whirled off the mass of the sun, as cosmogonists love to tell us, how comes it that in leaving the sun we cleaned him out so completely of his nitrogen and oxygen that not a trace of these gases remains behind to be discovered even by the sensitive vision of the spectroscope...
Pagina 262 - In extending the researches relative to this part of the investigations, a remarkable result was obtained in regard to the distance at which inductive effects are produced by a very small quantity of electricity; a single spark from the prime conductor of the machine, of about an inch long, thrown on the end of a circuit of wire in an upper room, produced an induction sufficiently powerful to magnetize needles in a parallel circuit of wire...
Pagina 1 - XI. Animal Mechanism : a Treatise on Terrestrial and Aerial Locomotion. By Professor EJ Marey. With 117 Illustrations.
Pagina 3 - Heredity." $1.50. 42. ANTS, BEES, AND WASPS. A Record of Observations of the Habits of the Social Hymenoptera. By Sir JOHN LURROCK, Bart., FRS, DCL, LL.
Pagina 199 - Electrical matter differs from common matter in this, that the parts of the latter mutually attract, those of the former mutually repel each other.