Electricity for public schools and colleges (1891)
Larden, W. (Walter), b. 1855 or 6 · London : Longmans · leaf 64
an be determined. Now by § 13 it is clear that, if we have measured the inclina-tion a, we can find R by measuring the horizontal component Hof the earths total field. For we have the simple relation thatH = R cos . n. This is convenient ; since, for practical reasons, itis easier to measure the… … 38 ELECTRICITY CH. III. mechanical properties, as depending upon its mass and its dimen-sions, can be readily calculated. This is very carefully magnetised,and is then suspended by a thread of fibre of negligible torsionalelasticity, so that there is complete freedom of vibration in amagnetic…
Electricity
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