Elementary Treatise on Electricity and MagnetismLongmans, Green, and Company, 1896 - 576 páginas |
Dentro del libro
Resultados 1-5 de 68
Página 3
... move over them . There are , however , many substances — such as glass , shellac , india - rubber , silk , wool , sulphur , amber - which , when electrified at one part , allow the electrical state to spread only very slowly and ...
... move over them . There are , however , many substances — such as glass , shellac , india - rubber , silk , wool , sulphur , amber - which , when electrified at one part , allow the electrical state to spread only very slowly and ...
Página 7
... move from one and towards the other ( § 1 ) . If , therefore , the mechanical resistances are so small that motion can actually take place , work is done by the electrical forces . It may be said , then , that the space near the ...
... move from one and towards the other ( § 1 ) . If , therefore , the mechanical resistances are so small that motion can actually take place , work is done by the electrical forces . It may be said , then , that the space near the ...
Página 8
... moving in the field . The total amount of work that can thus be done may be called the energy of the electric field ... move backwards and forwards from one boundary of the field to the other . For example , let A and B FIG . 6 . ( Fig ...
... moving in the field . The total amount of work that can thus be done may be called the energy of the electric field ... move backwards and forwards from one boundary of the field to the other . For example , let A and B FIG . 6 . ( Fig ...
Página 10
... moves away from a , and the suspend- ing wire is thereby twisted . By turning the upper end of the wire in the opposite direction , b can be brought back to within any required distance of a . Let a be the angular distance between the ...
... moves away from a , and the suspend- ing wire is thereby twisted . By turning the upper end of the wire in the opposite direction , b can be brought back to within any required distance of a . Let a be the angular distance between the ...
Página 15
... move away from each other , but any portion of the fluid itself is in equilibrium under the action of balancing forces . On this view , what is commonly called the quantity of electricity on a conductor , or the amount of its charge ...
... move away from each other , but any portion of the fluid itself is in equilibrium under the action of balancing forces . On this view , what is commonly called the quantity of electricity on a conductor , or the amount of its charge ...
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Otras ediciones - Ver todas
Elementary Treatise on Electricity and Magnetism George Carey Foster,Alfred William Porter Vista completa - 1909 |
Elementary Treatise on Electricity and Magnetism George Carey Foster,Edmund Atkinson Vista completa - 1896 |
Términos y frases comunes
acid action ampere angle axis ball battery boundary capacity cell centre charge chemical circuit coating coefficient condenser conducting connected consequently constant copper corresponding coulomb cylinder density dielectric difference of potentials discharge distance effect elec electric field electric force electrified body electrodes electromotive force electroscope element energy equal equation equilibrium equipotential surface experiment expressed external flux formula given glass Hence india-rubber induction inside insulated conductor intensity iron Joule's law joules junction knob Leyden jar lines of force machine magnetic magnetisation measured metal needle negative number of lines opposite direction outer surface parallel passes Peltier effect perpendicular plane plate pole positive electricity produced proportional quantity of electricity quantity of heat represented resistance result solid angle spark sphere strength suppose surface-density T₁ temperature terminals thermo-electric traversed tubes of force unit V₁ V₂ volt wire zinc
Pasajes populares
Página 458 - As a unit of resistance, the international Ohm. which is based upon the ohm equal to 109 units of resistance of the CGS system of electro-magnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grammes in mass, of a constant cross-sectional area, and of a length of 106.3 centimetres.