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 151
se the light. Here, again, is a model to illustrate the splitting ofthe waves. Two thin flexible strips of ebonite, O and E(Fig. 92), are inserted into saw-cuts in the end of acylinder of wood. In the other end I can fix a thirdstrip, A. Notice, if you please, that O is set with itsedge vertical,… … Fig. 92. movement to the strip A at the other end. If I waggleA from right and left, then O vibrates from right and left.If I waggle A up and down, then E vibrates up anddown, while O is quiet. If now I impart to A anoblique1 motion, both O and E vibrate, the obliquemotion being resolved into a…
Light · X-rays
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