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 46
nother image. This time I have pierced a squarehole, but the second image is just the same as the first,and does not depend on the shape of the hole. I pierceagain a three-cornered hole—still another image. If Ipierce a whole lot of holes I get just as many images,and they are arranged, in a sort…
Light · X-rays
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