Incandescent light bulb

The incandescent light bulb, incandescent lamp or incandescent light globe is a source of electric light that works by incandescence (a general term for heat-driven light emissions which includes the simple case of black body radiation). An electric current passes through a thin filament, heating it until it produces light. The enclosing glass bulb prevents the oxygen in...

Law

Inventor:

Patent Number:

  • 223,898

Issue Date:

  • Jan 27, 1880

Application Date:

  • Nov 4, 1879
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