Becquerel phosphoroscope. This device,invented by the French physicist Alexandre-Edmond Becquerel (1820-1891),is used to measure the time taken for a phosphorescent material to stop glowing. Artwork from the tenth volume (second period of 1892) of the French popular science weekly 'La Science Illustree' | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 4551 px × 3861 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |