The mathematical theory of electricity and magnetism (1911)
Jeans, James Hopwood, Sir, 1877-1946 · Cambridge [Eng.] : University Press · leaf 191
een observed byKerr and others, that a piece of non-crystalline glass acquires crystallineproperties when placed in an electric field. Such a piece of glass reflectslight like a uniaxal crystal of w^hich the optic axis is in the direction of thelines of force. 182 General Analytical Theorems [CH.… … Fig. 56. where r is the distance from P to the element dxdydz, and the integrationextends throughout S. By Greens Theorem (equation (101)) ^^^iUV^V-V^-U)dxdydz=\\[u^-^^-V^-^y8, where the normal is now drawn outwards from the surface S. In this equation, put U = ~, then, since V- F = — ^irp, we have…
Electricity · Magnetism
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