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:
Photoaufbau mit Halogenstrahler SahiFa Braunschweig APQ edit. en Photoaufbau mit eingeschaltenem Halogenstrahler zur Demonstration zur Lichtitensitt von Halogenstrahler und Tageslicht Mischlicht own Christoph Braun collapse Supported by Deutschland Supported by Deutschland cczero Files by Christoph Braun Making of Sammlung