Absolute Measurements in Electricity and MagnetismMacmillan and Company, 1889 - 384 sider |
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Resultat 1-5 av 45
Side 31
... corresponding abscissa of which was the field intensity , enabled the change produced by the earth's field to be obtained by interpolation as described above ( p . 18 ) . A comparison of the results obtained with the two coils showed ...
... corresponding abscissa of which was the field intensity , enabled the change produced by the earth's field to be obtained by interpolation as described above ( p . 18 ) . A comparison of the results obtained with the two coils showed ...
Side 54
... corresponding to a deflection 0 the value 2π 6 a Hml sin a . If then under the action of a current in the coil the deflec- tion of the needle is 0 , the equation of equilibrium is 0 Cm 2π r l cos 0 = m Hl ( sin 0 + sin a 2π a and ...
... corresponding to a deflection 0 the value 2π 6 a Hml sin a . If then under the action of a current in the coil the deflec- tion of the needle is 0 , the equation of equilibrium is 0 Cm 2π r l cos 0 = m Hl ( sin 0 + sin a 2π a and ...
Side 61
... corresponding division on the circle the adjustment is correct . When taking readings the observer places his eye so as to see the index just cover its image in the mirror bottom of the box , and reads off the number of divisions and ...
... corresponding division on the circle the adjustment is correct . When taking readings the observer places his eye so as to see the index just cover its image in the mirror bottom of the box , and reads off the number of divisions and ...
Side 69
... corresponds to a velocity of 1 cm . per second . This resistance , how- ever , is too small to be practically useful , and a resistance 1,000,000,000 times as great , that is the resistance of a wire , to maintain 1 C.G.S. unit of ...
... corresponds to a velocity of 1 cm . per second . This resistance , how- ever , is too small to be practically useful , and a resistance 1,000,000,000 times as great , that is the resistance of a wire , to maintain 1 C.G.S. unit of ...
Side 70
... corresponding expression for the old unit of time . In the same way the change ratio for rate of change of velocity or acceleration is L / T2 ; and the change - ratio of any other physical quantity may be found by determining from its ...
... corresponding expression for the old unit of time . In the same way the change ratio for rate of change of velocity or acceleration is L / T2 ; and the change - ratio of any other physical quantity may be found by determining from its ...
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amperes angles arrangement balance battery brass C.G.S. units C₂ cell centimetres centre coil comparison condenser conductor connected constant convenient copper cross-sections current flowing current strength deflection denote density described determined difference of potential dimensional formula distance E₁ electrical efficiency Electricity and Magnetism electrodes electromagnetic electromotive force electrostatic equal equation fixed give given graduated grammes Hence horizontal induction instrument insulated joined in series kathode Lord Rayleigh machine magnetic field means ment method motor movable ring n² L² nearly needle numerical obtained Ohm's law ohms piece placed plane plate points pole position potential galvanometer practical unit quantity of electricity r₁ R₂ ratio rheostat round scale screws self-induction shown in Fig Sir William Thomson slider sliding standard surface temperature terminals thick turned unit of length V₁ V₂ velocity vertical voltmeter volts vulcanite wattmeter weight Wheatstone's Bridge wire wire coils zero
Populære avsnitt
Side 385 - With the Mathematical Elements of Music. Designed for the Use of Students in the University. Second Edition, revised and enlarged. Crown 8vo. gs. A TREATISE ON MAGNETISM. Designed for the Use of Students in the University.