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 224
onstrated another point, namely,that a hot black surface radiates out the heat-wavesmore readily than a hot bright surface does. Now let us pass on to another experiment in whichwe again employ the thermopile. Here is a thermopileconnected by wires to the galvanometer, with its re-flected spot of…
Light · X-rays
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