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Thomas Edison flipped a switch at his Menlo Park laboratory and flooded the nigh
Featured Event 1879 Event

December 31

Edison Lights the World: Incandescent Light Debuts

Thomas Edison flipped a switch at his Menlo Park laboratory and flooded the night with electric light, instantly proving that indoor illumination could replace gas lamps. This demonstration launched the global electrical utility industry, driving cities to build power grids and fundamentally extending productive hours for factories and homes.

December 31, 1879

147 years ago

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