They just needed electricity in their house because a lot of candles and lanterns started fire back then. So that's why they were invented
If you meant to say WHEN was the light bulb invented, it was invented October 22, 1879.
December 24,1877 he invented the light bulb.
Thomas Edison invents the light bulb.
The flourescent light bulb was invented in 1827.
Joseph Wilson Swan had invented the first light bulb in england, as Thomas Edison was invented the light bulb in America.
1879...
Humphry Davy
bub
put in a light bub
Electrical goes in. Electromagnetic (heat and light) come out.
Lil Bub goes by Bub.
bub light i think
Jeffrey Bub was born in 1942.
Bub Bridger was born in 1924.
Bub Bridger died in 2009.
Bub Kuhn was born in 1899.
Bub Kuhn died in 1956.