|
|
Question
#15366. batch
asks:
Who invented the electric light bulb?
|
Brainy Blonde
|
Inventor Thomas Alva Edison profoundly influenced modern life through inventions such as the incandescent light bulb, the phonograph, and the motion picture camera. During his lifetime, he acquired 1,093 patents, and marketed many of his inventions to the public.
 http://memory.loc.gov/ammem/edhtml/edbiohm.html
Thomas Edison is one of the world's most famous inventors. He invented the sound-recording device, motion picture, and his most famous invention, the light bulb. All of the things that Edison invented have had a dramatic effect on our world.
http://www.norfacad.pvt.k12.va.us/project/edison/edison.htm
Contrary to popular belief, Thomas Alva Edison didn't 'invent' the light bulb, but rather he improved upon a 50-year-old idea. In 1879, using lower current, a small carbonized filament, and an improved vacuum inside the globe, he was able to produce a reliable, long-lasting source of light.
1875 - Henry Woodward and Matthew Evans patented a lightbulb.
1878 - Sir Joseph Wilson Swan (1828-1914), an English physicist, was the first person to invent a practical and longer-lasting electic lightbulb (13.5 hours). Swan used a carbon fiber filament derived from cotton.
1879 - Thomas Alva Edison invented a carbon filament that burned for forty hours. Edison placed his filament in an oxygenless bulb. (Edison evolved his designs for the lightbulb based on the 1875 patent he purchased from inventors, Henry Woodward and Matthew Evans.)
http://inventors.about.com/library/inventors/bllight2.htm
Dec 27 01, 8:41 PM
|
Senior Moments
|
James Bowman Lindsay developed the first practical electric lamp as described in the Dundee Advertiser of 31 July 1835. Commercially produced lamps were produced by Thomas Alva Edison and by Sir Joseph Swan. The first Edison bulb to burn for a reasonable length of time (13.5 hours) was Model No. 9 on 21 October 1879. Swan managed it 10 months earlier but it was not until early in 1880 that he produced a true filament lamp.
Dec 28 01, 3:46 PM
|
|
Fun Trivia | 
Quizzes | 
Games
| 
People | 
Services | 
Help | 
Me
Sign up for your FREE FunTrivia ID! Compete,
play free games, and meet people! Click here...
Have a question that you want answered? Are you able to answer questions from other FunTrivia guests? Then you have come to the right
place!