Who invented the light bulb?
No, that’s not a trick question.
Thomas Alva Edison, the Wizard of Menlo Park, widely regarded as America’s greatest inventor, did not invent the incandescent light bulb. The electric light was originally developed by Humphrey Davy, an Englishman, in the early 1800s. But this was an arc lamp, not an incandescent light bulb. Joseph Swan, another Englishman, developed and patented designs for an incandescent light bulb likely used by Edison in the development of his light bulb. Edison’s most significant improvement on the design was the refinement of the bulb’s filament. His filament led to a light bulb that burned much longer than Swan’s. Edison and his crew of engineers did not invent the light bulb. They refined the existing design, producing a light bulb practical every day use.
Edison often refined the designs of others and is generally credited with inventions that predate him or were the direct result of the efforts of his employees. This practice of taking credit for the inventions of his employees, though probably a custom of the time, would be the equivalent of Bill Gates claiming all of Microsoft’s patents as his own inventions. Mr. Gates would easily surpass the number of inventions Edison holds, if he was to employ the same practices, today.
The light bulb, as with so many things of our technological age, was not the invention of Thomas Alva Edison nor even one man. The efforts of many people gave us the incandescent light bulb.
Sources and additional reading:
Lamp Inventors 1880-1940: Carbon Filament Incandescent
Did Thomas Edison Really Invent the Light Bulb?
A Few Gifted Men Who Worked for Edison
