Lectures on light, delivered in the United States in 1872-'73; with an appendix (1873)
Tyndall, John, 1820-1893 · New York, Appleton · leaf 126
asible. By turning either the polarizer or theanalyzer through the smallest angle, the uniformity ofthe color disappears, and the two halves of the quartz TUE MAGNETIZATION OF LIGUT. 121 show different colors. The magnet also produces thiseffect. The puce-colored circle is now before you onthe… … one half of the image becomes suddenly red, the otherhalf green. Interrupting the current, the two colorsfade away, and the primitive puce is restored. Theaction, moreover, depends upon the polarity of the mag-net, or, in other words, on the direction of the currentwhich surrounds the magnet.…
Optics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
