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.
T Fig. . Tubes de Geissler. fr Tubes de Geissler Figuier Les Merveilles de la science Tome djvu Creator Louis Figuier other versions Custom marker PDold Uploaded with Les Merveilles de la science Tome Geissler tubes
Page 2023 Free-images.com. All images are Public Domain