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 247
ube. Fig. 124 shows a set of the apparatus with which 224 LIGHT LECT. Professor Lodge repeated and verified the observations ofHertz as to the optical properties of these electric waves.Hertz had reflected them with parabolic mirrors 6 feethigh, and refracted them with huge prisms of pitch. Hefound… … Fig. 124. sists of an oscillator, like Fig. 121a, having a 5-inch ballemitting 7-inch waves, enclosed in a copper box furnishedin front with a diaphragm perforated with apertures ofvarious sizes to moderate the radiation to any desireddegree. As detector, D, there is used a tube full ofcoarse iron…
Light · X-rays
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