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Edison's Lamp

Edison's incandescent lamp. Many inventors had tried to make an incandescent lamp, but had failed for lack of the tight material for a filament. Thomas Alva Edison was successful with this model, dated October 21, 1879, in which the high-resistance filament was made of carbonized cotton sewing thread.

NMAH, Washington DC, DC, USA

Author: Michael Freeman

©Michael Freeman

Photo size: 14.0 Mpixels (40.1 MB uncompressed) - 2624x5336 pixels (8.7x17.7 in / 22.2x45.2 cm at 300 ppi)

Photo keywords: Edison, electricity, filament, incandescent, invention, ipn, lamp, light, museum

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