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:
Kirchhoff Spektralanalyse plaque Heidelberg Germany DSC. en In diesem Haus hat Kirchhoff seine mit Bunsen begrndete Spektralanalyse auf Sonne und Gestirne gewandt und damit die Chemie des Weltalls erschlossen Hauptstrae Heidelberg Germany own Daderot other versions cczero Kirchhoff Spektralanalyse plaque