Light Bulb Picture Views
Before he died in 1931, Edison patented 1,093 of his inventions. The wonders of his mind include the microphone, telephone receiver, universal stock ticker, phonograph, kinetoscope (used to view moving pictures), storage battery, electric pen, and mimeograph. Edison improved many other existing devices as well. From a discovery made by one of his associates, he patented the Edison effect (now called thermionic diode), which is the basis for all electron tubes. Edison will forever be remembered for his contributions to the incandescent light bulb. Even though he didn't dream up the first light bulb ever crafted, and technology continues to change every day, Edison's work with light bulbs was a spark of brilliance on the timeline of invention. At the very beginning of his experiments with the incandescent lamp in 1879, he said: