identify your lightbulb > bulb identification key

Lamp with smaller wooden threaded base and carbonized split Japanese bamboo filament attached by copper plated clamps with screws.  This is the second threaded base developed by Edison in February 1881.

NEXT PAGE in the Evolution of Incandescent Light Bulbs

  thomas edison > website navigation thomas edison > home page thomas edison > timeline : early life thomas edison > timeline : inventing the incandescent lamp thomas edison > timeline : after lighting thomas edison > timeline : legacy of invention thomas edison > classroom thomas edison > interactive modules