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 298
VI RONTGEN LIGHT 269 … Fig. 146. gen light. The three leaves are made of aluminium,aluminium foil being better than leaf-gold for electro-scopes. They are supported within a thinflask of Bohemian glass entirely enclosed,except at the top, in a mantle of trans-parent metallic gauze. After the leaveshave been…
Light · X-rays
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