As early as 1761, Ebenezer Kinnersley demonstrated the possibility of wire being heated to incandescence. Humphry Davy used a giant battery to make a light bulb with platinum in 1802, and a number of other inventors refined the device over the coming century until Edison commercialized the product.
Edison began working on the light bulb in 1878, even buying patents from other inventors so he could improve their design to make a new, better-patented device. His first product lasted a meager 13.5 hours, but his successive prototypes reached upwards of 1,200 hours. His bulb relied on a carbonized bamboo filament vacuum-sealed inside a glass ball.
Edison didn’t just develop the device, but marketed it, and got the press on his invention’s side. Seen as the father of electricity, Edison’s light bulb spurred a wave of electrification.
In celebration of 50 years of light cast by Edison’s invention, Henry Ford and General Electric organized a grand ceremony for the aging Edison. Attendees to light’s golden jubilee included President Herbert Hoover, Walter Chrysler, Marie Curie, John D. Rockefeller Jr., Charles Schwab, Orville Wright, and even Albert Einstein via radio.
All over the country, people turned off their lights, waiting for the moment a reenactment bulb was lit at the ceremony. When the final wire was connected to an exact replica of Edison’s first bulb, everyone turned on their lights in celebration.
September 19, 2024
Strong winds at Slope Point, New Zealand, have left trees with a permanent crooked shape.
Robert Ripley began the Believe It or Not! cartoon in 1918. Today, Kieran Castaño is the eighth artist to continue the legacy of illustrating the world's longest-running syndicated cartoon!
