Wikipedia who invented the light bulb

The first electric light bulb, invented by Thomas Alva Edison in and patented on January 27, Latimer's improvements. Around the same time Edison was experimenting with his bulb -- using carbonized filaments of bay wood, cedar, bamboo and other fibers -- so was Latimer.

Born just a year after Edison in , Latimer was an inventor known for working closely with Alexander Graham Bell, who invented the telephone though some claim that invention is actually Latimer's. According to the Massachusetts Institute of Technology , Latimer improved upon Edison's original design.

Latimer created a light bulb with a more durable filament made of carbon. He sold the patent to the US Electric Co. His lamp design worked but the cost of the precious metal platinum made this an impossible invention for wide-spread use. Joseph Wilson Swan started working with carbonized paper filaments the same year. He used a carbonized bamboo filament placed inside a glass bulb. Swan pictured below used a carbon fiber filament derived from cotton.

Edison placed his filament in a oxygenless bulb. Edison evolved his designs for the light bulb based on the patent he purchased from inventors, Henry Woodward and Matthew Evans. You keep switching the names, James and Henry in regards to Henry Woodward. Please correct or clarify as this is confusing and casts doubt on the validity of your article.

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Skip to content Skip to primary sidebar. Comments it says James Woodward, not Henry Woodward you should change it. On other sites, it says that it is Henry Woodward. An honors graduate from the University of North Carolina at Asheville where he concentrated in sociology and political science, he later earned a Masters degree in social work from the University of North Carolina at Chapel Hill.

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