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.
HCCLmicroscope. Kathodolumineszenzmikroskop heisser Kathode HCLM CLmicroscope with hot cathode selfphotographed Rolf Neuser PDrelease original upload log de Leyo CommonsHelper page de HCCLmicroscope Macmille bytes no Andere Versionen Vacuum tubes Microscopes
Page 2023 Free-images.com. All images are Public Domain