![Tesla at a banquet](/sites/default/files/styles/default_extra_large/public/theme-images/hero-images.jpg?itok=vaECt2og)
Nikola Tesla Images and Photographs
Images and photographs of, or related to, Nikola Tesla
Three Tesla phosphorescent bulbs under test for actinic value
Fig. 5. — Three phosphorescent bulbs under test for actinic value. Photographed by their own light.