![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
Corona and flash-over on a 37-inch porcelain pedestal insulator
Fig. 3. — This shows a wonderful corona and flash-over on a 37-inch porcelain pedestal insulator. This corona is occurring at a potential of 234,000 volts and 51,000 cycles per second.