By Fraunhofer_lines.jpg: nl:Gebruiker:MaureenVSpectrum-sRGB.svg: PhroodFraunhofer_lines_DE.svg: Fraunhofer_lines.jpg: Saperaud 19:26, 5. Jul. 2005derivative work: Cepheiden (talk)derivative work: Cepheiden [Public domain], via Wikimedia Commons

https://en.wikipedia.org/wiki/Fraunhofer_lines#/media/File:Fraunhofer_lines.svg