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 145
124 LIGHT LECT. Let us devote a little further attention to this pheno-menon of the double-refraction that thus yields us twobeams of light that are polarised in different planes.Here is another wave-motion model (Fig. 86) constructedto show two sets of waves which are polarised in planesmutually… … Fig. 86. waves of silvered beads, both of which, when I turn thehandle of the model, will march along. Both have thesame wave-length, both march at the same pace andtoward the same end. But there is this differencebetween them : in one the displacements are polarisedat 450 one way; in the other the…
Light · X-rays
Internet Archive · UBC Library · Public Domain Mark 1.0. Free to use for anything.
