Davy's electric egg. Intense light from voltaic arc between points of two carbon rods. It was not until some years after Davy's death in 1829 that carbon arc lamp widely used because
Watch this cool demonstration of a vintage carbon arc lamp | Boing Boing
Carbon arc lamp | Science Museum Group Collection
Arc Lamps - How They Work & History
Arc lamp - Wikipedia
Arc lamp - Wikipedia
Carbon arc lamp | Science Museum Group Collection
Arc Lamps - How They Work & History
Understanding Early Arc Lamps
Followspots Archives - CantoUSA
Mole Richardson Industrial Hollywood Movie Arc Light, circa 1935 For Sale at 1stDibs
Arc Lamps - How They Work & History
Early Street Light Designs
51 Electric Carbon Arc Lamp Photos and Premium High Res Pictures - Getty Images