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.
FeynmanDiagrammKorrigiert. de February korrigiertes Bild made by Andreas Fedoseew Andreas Fedoseew Lizenzfrei physics PDrelease Original upload log de Wdwdbot CommonsHelper de FeynmanDiagrammKorrigiert Davexdave bytes no Bild Lizenzfrei made by Andreas Fedoseew Superconductors
Page 2023 Free-images.com. All images are Public Domain