On October 21, 1879, Thomas Edison tested a carbon-filament light bulb that lasted more than 13 hours. He didn’t invent the first light bulb, but his improvements helped make electric lighting practical.
-Chelsey
On October 21, 1879, Thomas Edison tested a carbon-filament light bulb that lasted more than 13 hours. He didn’t invent the first light bulb, but his improvements helped make electric lighting practical.
-Chelsey