Light visible and invisible : a series of lectures delivered at the Royal Institution of Great Britain, at Christmas, 1896 (1897)
Thompson, Silvanus Phillips, 1851-1916, Royal Institution of Great Britain · New York : Macmillan · leaf 245
Fig. 121. Fig. 122. effect dying out after about ih or 2 complete oscillations.The wave-length of the emitted waves is about ij timesthe diameter of the ball. The other form, Fig. 121/;,shows a metal cylinder which is sparked into at oppositeends of a diameter by two interior balls. This…
Light · X-rays
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