This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Fine structure of Lyalpha.svg Fine structure of atomic hydrogen the Ly line Structure fine de l'hydrogne atomique la raie Ly Feinstruktur des Wasserstoffatoms die Ly Linie Made by myself with xfig Rgis Lachaume All rights released Hydrogen physics
Page 2023 Free-images.com. All images are Public Domain