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.
Keywords from Image Description:
Ceospectrumpohl mit sichtbar . Blackbody radiation in comparison to gas mantle based on CeO Source of data Pohl Optik und Atomphysik Own drawing No claim for rights Visible range added now more explicit Ceospectrumpohlmitsichtbar UTC Ceospectrumpohlmitsichtbar User Anton derivative work Pemu talktalk made more explicit Pemu