Absolute Measurements in Electricity and MagnetismMacmillan and Company, 1889 - 384 sider |
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Side 6
... piece of mahogany about 10 cms . long . This groove is widened at one end to a circular space a little greater in diameter than the diameter of the mirror . The piece of wood is then fixed with that end down in a horizontal base - piece ...
... piece of mahogany about 10 cms . long . This groove is widened at one end to a circular space a little greater in diameter than the diameter of the mirror . The piece of wood is then fixed with that end down in a horizontal base - piece ...
Side 7
... piece of wood with a strip of glass , which may be kept in its place either by cement , or by proper fastenings which hold it tightly against the wood . By making the distance between the back and front of the circular space small , and ...
... piece of wood with a strip of glass , which may be kept in its place either by cement , or by proper fastenings which hold it tightly against the wood . By making the distance between the back and front of the circular space small , and ...
Side 8
... pieces of steel wire , each perfectly straight and having its ends carefully filed so that they are at right angles to its length , are prepared . These are tied tightly into a bundle with a binding of iron wire and heated to redness in ...
... pieces of steel wire , each perfectly straight and having its ends carefully filed so that they are at right angles to its length , are prepared . These are tied tightly into a bundle with a binding of iron wire and heated to redness in ...
Side 21
... piece , and the front , or side toward the lamp , is closed by a sliding panel of glass which can be placed in either of two slots so as to give a greater or less space for the mirror to swing in . ] The sole plate P , made of mahogany ...
... piece , and the front , or side toward the lamp , is closed by a sliding panel of glass which can be placed in either of two slots so as to give a greater or less space for the mirror to swing in . ] The sole plate P , made of mahogany ...
Side 22
... piece is cemented with the groove upwards to a plate of glass g . This plate is sup- ported on three feet of hard wood , resting on the mahogany sole plate P , and is free to turn in azimuth round a closely fitting centre pivot c fixed ...
... piece is cemented with the groove upwards to a plate of glass g . This plate is sup- ported on three feet of hard wood , resting on the mahogany sole plate P , and is free to turn in azimuth round a closely fitting centre pivot c fixed ...
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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.