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 236
d forwards along the same path withgreat regularity and excessive rapidity. If, for instance,there were twenty successive oscillations, each lasting THE INVISIBLE SPECTRUM 215 only one one hundred-millionth part of a second,1 thewhole series would only last one five-millionth part of asecond, and…
Light · X-rays
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