Parts of a Lightbulb
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How long did the bulb burn?
13 hours
Base
holds the bulb in its fixture and is connected to an electric circuit
Gas
keeps the filament from burning out too quickly
When was the light bulb invented?
October 21, 1879 in New Jersey
Who invented the light bulb?
Thomas Alva Edison
Bulb
contains a thin filament of carbon made by burning a thread of cotton
Filament
top of the bulb supported by a wire frame
