Evening Republican, Volume 19, Number 116, Rensselaer, Jasper County, 17 May 1915 — Peculiarities of Light [ARTICLE]

Peculiarities of Light

No influence of any form of attraction on light had ever been noticefl until some years ago, when Zeemann showed that a powerful magnet visibly altered the position of certain lines in the spectrum. Now it appears likely that gravitation has a similar, though not the same, effect. Magnetism splits up the spectral lines, exerting a broadening effect, while gravitation shifts them all alike in one direction. For instance, in the solar spectrums, whose rays at their origin have passed through the powerful field of gravity in the sun’s vicinity, all the lines appear shifted toward the red, as compared with similar lines from terrestrial light