Newall, H. F · London : Society for Promoting Christian Knowledge · leaf 123
d forthe sun. Deslandres in 1895 revived the observationsand showed that if the image of Jupiter is thrownon the slit of a spectroscope, with the equatorialdiameter of the planet on the slit, and if then thespectrum of the planet is photographed, it canbe seen that the lines in the spectrum are… … «— Violet Fig. 39. *] MOTIONS ON THE SUN AND PLANETS 113 spectrum is formed by light coming from the recedingedge of Jupiters disc. The lines at the top of thespectrum are shifted towards the violet, and thoseat the bottom are shifted towards the red ; thosemidway between the bottom and the top…
Spectroscope · Spectrum analysis
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
