Absolute Measurements in Electricity and MagnetismMacmillan and Company, 1889 - 384 sider |
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Side 2
... obtained it is essential in the first place that convenient instruments should be * Reports of the British Association Committee on Electrical Standards , edited by Prof. Jenkin , F.R.S. + See Appendix below . used , adapted to give ...
... obtained it is essential in the first place that convenient instruments should be * Reports of the British Association Committee on Electrical Standards , edited by Prof. Jenkin , F.R.S. + See Appendix below . used , adapted to give ...
Side 8
... obtained . It is convenient to make the horizontal distance of the mirror from the scale for this position if possible one metre . The lamp- stand should also have three levelling screws , for which the arrangement of conical hollow , V ...
... obtained . It is convenient to make the horizontal distance of the mirror from the scale for this position if possible one metre . The lamp- stand should also have three levelling screws , for which the arrangement of conical hollow , V ...
Side 11
... obtained , for the number of divisions of the scale which measures the deflection , divided by the number of such divisions in the distance of the scale from the mirror , is then equal to tan 20 . Instead of in the east and west ...
... obtained , for the number of divisions of the scale which measures the deflection , divided by the number of such divisions in the distance of the scale from the mirror , is then equal to tan 20 . Instead of in the east and west ...
Side 15
... obtained by taking the mean of the results of a sufficient number of observations , and from this the value of the product of m and H can be calculated . For a small angular deflection of the vibrating magnet from the position of ...
... obtained by taking the mean of the results of a sufficient number of observations , and from this the value of the product of m and H can be calculated . For a small angular deflection of the vibrating magnet from the position of ...
Side 23
... obtained . The position of the needle was then altered , if necessary , by the levelling screws until the positions of the table for no deflection with the magnet first on one side then on the other of the magnetometer were coincident ...
... obtained . The position of the needle was then altered , if necessary , by the levelling screws until the positions of the table for no deflection with the magnet first on one side then on the other of the magnetometer were coincident ...
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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.