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You are hereIncandescent light bulbOctober 22, 1879

1831Electromagnetic induction Shared thread 1959MOSFET Shared thread 1800Voltaic pile Shared thread 1897J. J. Thomson Shared thread 1820Hans Christian Ørsted Shared thread 1886Heinrich Hertz Shared thread

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October 22, 1879

Incandescent light bulb

The filament that worked began as six-cord No. 24 cotton sewing thread — and the lamp did not simply burn out: the experimenters deliberately made it brighter until the glass cracked.

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