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 56
full of water with a spoon in it. This same phenomenon of total reflexion can bebeautifully illustrated by the luminous cascade or fairyfountain. I allow water to stream out of a nozzle, andshine light in behind through a window into the cisternfrom which the water flows. It falls in a parabolic… … Fit;. 23. 4o LIGHT LECT. though it is of a bent and crooked shape, the lighttravels until it comes to the other end. Returning now to the use of lenses to cause thewaves to converge and diverge, we will adjust our lan-tern to send out a straight beam, and then interpose in
Light · X-rays
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