The light bulb Thomas Edison.
How else would I write those late night essays for school? LOL!
The modern world is an electrified world. The light bulb, in particular, profoundly changed human existence by illuminating the night and making it hospitable to a wide range of human activity. The electric light, one of the everyday conveniences that most affects our lives, was invented in 1879 by Thomas Alva Edison. He was neither the first nor the only person trying to invent an incandescent light bulb.
Invention: electric light bulb in 1879
Definition: noun / electric light bulb / incandescent lamp
Function: An electric lamp in which a filament is heated to incandescence by an electric current. Today's incandescent light bulbs use filaments made of tungsten rather than carbon of the 1880's.
Patent: 223,898 (US) issued January 27, 1880
Inventor: Thomas Alva Edison
Criteria: First practical. Modern prototype. Entrepreneur.
Birth: February 11, 1847 in Milan, Ohio
Death: October 18, 1931 in West Orange, New Jersey
Nationality: American
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