What is Electricity?D. Appleton and Company, 1903 - 315 страници |
Между кориците на книгата
Резултати 1 - 5 от 100.
Страница 11
... wire and a magnet . The reason that it remained undiscovered so long was due to the difficulty of obtaining well - insulated copper wire , and to the want of a sufficiently sensitive instrument to de- tect it . The story of the ...
... wire and a magnet . The reason that it remained undiscovered so long was due to the difficulty of obtaining well - insulated copper wire , and to the want of a sufficiently sensitive instrument to de- tect it . The story of the ...
Страница 30
... - festations perplex the human mind . They had no conception of the possibility of producing a magnetic condition in iron by means of a wire wrapped around the iron and connected with a voltaic cell ; for the 30 WHAT IS ELECTRICITY ?
... - festations perplex the human mind . They had no conception of the possibility of producing a magnetic condition in iron by means of a wire wrapped around the iron and connected with a voltaic cell ; for the 30 WHAT IS ELECTRICITY ?
Страница 45
... wire uniformly with silk , cotton , or other nonmetallic or insulating substance existed be- fore the time of Benjamin Franklin . Without insulated wire no progress was possible in electricity , for the electro - magnet , by means of ...
... wire uniformly with silk , cotton , or other nonmetallic or insulating substance existed be- fore the time of Benjamin Franklin . Without insulated wire no progress was possible in electricity , for the electro - magnet , by means of ...
Страница 46
... wire makes an iron core a magnet . The oftener we make it flow around the iron , or , within certain limits , the more turns of wire we put upon our spool , keeping the strength of the electric current constant , the stronger the magnet ...
... wire makes an iron core a magnet . The oftener we make it flow around the iron , or , within certain limits , the more turns of wire we put upon our spool , keeping the strength of the electric current constant , the stronger the magnet ...
Страница 47
... wire and steam or air at high pressure in a pipe is the absolute stillness which marks its sudden passage from one wire to another one of larger diameter . In the case of air or steam , this sudden passage from a small conductor or pipe ...
... wire and steam or air at high pressure in a pipe is the absolute stillness which marks its sudden passage from one wire to another one of larger diameter . In the case of air or steam , this sudden passage from a small conductor or pipe ...
Други издания - Преглед на всички
Често срещани думи и фрази
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
Популярни откъси
Страница 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.
Страница 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...
Страница 2 - STUDENTS' TEXT-BOOK OF COLOR; Or, Modern Chromatics. With Applications to Art and Industry. By Professor OGDEN N.
Страница 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...
Страница 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...
Страница 1 - XI. Animal Mechanism : a Treatise on Terrestrial and Aerial Locomotion. By Professor EJ Marey. With 117 Illustrations.
Страница 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.
Страница 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.