Translations:AY Honors/Stars/Prism/2/en
From Pathfinder Wiki
Careful study of these rainbows reveals that there are gaps between some of the colors. These gaps are called absorption lines, and depending on where they are in the spectrum (that is, where they are in the rainbow), scientists can tell what the light source is made of. Scientists also discovered that the temperature of a star is determined by its composition. So by observing the spectrum, scientists can tell the temperature of a star.
