Thomas Alva Edison held 1,093 patents for different inventions. Many of them, like the lightbulb, the phonograph, and the motion picture camera, were brilliant creations that have a huge influence on our everyday life. However, not everything he created was a success; he also had a few failures.
One concept that never took off was Edison's interest in using cement to build things. He formed the Edison Portland Cement Co. in 1899, and made everything from cabinets (for phonographs) to pianos and houses. Unfortunately, at the time, concrete was too expensive and the idea was never accepted. Cement wasn't a total failure, though. His company was hired to build Yankee Stadium in the Bronx.
From the beginning of the creation of motion pictures, many people tried to combine film and sound to make "talking" motion pictures. Here you can see to the left an example of an early film attempting to combine sound with pictures made by Edison's assistant, W.K.L. Dickson. By 1895, Edison had created the Kinetophone--a Kinetoscope (peep-hole motion picture viewer) with a phonograph that played inside the cabinet. Sound could be heard through two ear tubes while the viewer watched the images. This creation never really took off, and by 1915 Edison abandoned the idea of sound motion pictures.
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