Six lectures on light : delivered in America in 1872-1878 (1886)
Tyndall, John, 1820-1893 · New York : D. Appleton · leaf 161
t experimentone of these directions is parallel to one of the axesof the tourmaline, and the other parallel to the otheraxis. When this is the case, the film exercises nosensible action upon the light. But now I turn thefilm so as to render its directions of vibration obliqueto the two tourmaline… … our film of gypsum between them, you notice that inone particular position the film has no power what-ever over the field of view. But, when the film isturned a little way round, the light passes. We havenow to understand the mechanism by which this iseffected. IV. ArPLICATION OF THEORY TO…
Light
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
