Thomas Edison used this carbon-filament bulb in the first public demonstration of his most famous invention—the light bulb, the first practical ... N.J., laboratory on New Year's Eve, 1879. As the ...

An early sketch of a light bulb made by Thomas Edison on February 13 ... and long-lasting. In 1879, after years of obsessively improving on the concept of light bulbs, he demonstrated a bulb ...

1879: __Thomas Edison crowns 14 months of testing with an incandescent electric light bulb that lasts 13½ hours. Sir Humphry Davy had produced incandescent electric light in 1808 by passing ...

In 1878, Thomas Edison — already ... He had his latest light bulbs strung on wires mounted on poles between the buildings at Menlo Park. On New Year’s Eve 1879, he invited newspaper reporters ...

The electric light wasn’t Thomas Edison ... on this day in 1879, Edison tested the one he’s famous for. Though he didn’t come up with the whole concept, his light bulb was the first ...

Thomas Edison invented the electric lightbulb. Or did he? It’s painful to cast aspersions on the reputation of one of America’s heroes, but Edison, who patented his bulb in 1879, merely ...

Illustration by Meilan Solly / Background via Library of Congress In the autumn of 1878, Thomas Alva Edison had a problem. He hadn’t invented the light bulb ... s Eve in 1879—a little ...

Thomas Edison, known as the 'Father ... before finally returning to a carbon filament. 'By October 1879, Edison's team had produced a light bulb with a carbonized filament of uncoated cotton ...

Thomas Edison’s original patents surrounding the light bulb and an archive of 37 original ... an incandescent lamp in London in February 1879 and received his first patent for electric ...

Thomas Edison received a patent for his light bulb in January 1880. Restored photolithograph/Courtesy National Archives __1879: __Thomas Edison crowns 14 months of testing with an incandescent ...