SHADOW DISAPPEARS WITH LIFE.

Press, Volume LXII, Issue 12502, 25 May 1906, Page 7

SHADOW DISAPPEARS WITH LIFE.

Experiments with light rays ac they aecend in the frequency of vibration from tho comparative slowness of red light into the incredible rapidity of tho rays beyond the spectrum have of late j yeare been fruitful of some interesting results (saye "Public v/pinion"). JtVofeseor Elmer Gates, of Washington, j r>. C., has been experimenting with j light rays of the highest obtainable tre- | quency of vibration, and his results ' have interested the foreign scientists, especially one which has recently been made public. Varying 6hadowa are oast j by ordinary white light, light from tlie ultra violet rays, etc., but five octaves above the spectrum Professor Gates discovered a light wuiich cast a ehad>cw j only when a living object woe placed ! before it. Tho Now York '"Sun" , reports that in the course of a Jecture beforo , the Peycho-therapeutic Society of London, Dr. Ward commented on the discovery, and described the experiment as it was first made by the American Bci«Jti*rt: "Under these rave living objects throw a shadow which exietw only as long as there is life in tlhe object. A live rat was placed in a hermetically sealed tube, and held in the path of the rays in front of a sensitised txsreen-. • So long ac the rat wens alive it threw a shadow. When it was kij'ed it became suddenly transparent. Hero there was a strange phenomenon. At the very instant the rat became transparent, a shadow of exactly the same shape wae noticed to pass, as it were, out of and beyond the gWs tubo and vanished as it passed upward on the - wneitieed screen."