Lectures on light, delivered in the United States in 1872-'73; with an appendix (1873)
Tyndall, John, 1820-1893 · New York, Appleton · leaf 98
e axis, is quenched with exceeding rapidityby the tourmaline, so that, after having passed througha very small thickness of the crystal, the light emergeswith all its vibrations reduced to a single plane. Inthis condition it is what we call a beam oi plane polar-ized light. A moments reflection… … the light that passes through the one plate will bequenched by the other, a total interception of the light 94 LECTURES ON LIGHT. being the consequence. The image of a plate of tour-maline, 11 (Fig. 10), is now before you. I place par-allel to it another plate, t t: the green of the crystalis a…
Optics
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