When did Thomas Edison invent the perfected phonograph?

Answer Thomas Edison is known for many inventions, including the phonograph. The invention of the phonograph came about as he was working on two other inventions: the telephone and the telegraph. He teste... Read More »

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Where did Thomas Edison invent the phonograph?

Thomas Edison was in Menlo Park, USA, when he first invented the phonograph. This was a tin foil phonograph. The phonograph played cylinders and not disks which led to his discovery that he could p... Read More »

Did Thomas Edison invent photography?

No Thomas Edison did not invent photography. Employing data from the researches of Johann Heinrich Schulze-who, in 1727, discovered that silver nitrate darkened upon exposure to light-Thomas Wedgwo... Read More »

How did Thomas Edison invent the light bulb?

The Thomas Edison Innovation Foundation is quick to point out that Edison did not invent the idea of electric light; rather, his contribution was perfecting and making practical the incandescent li... Read More »

When did Thomas Edison invent the movie projector?

Thomas Edison first patented the idea for the Kinetoscope in 1888, despite the fact he had not yet invented the device. Edison patented the actual device in 1891, and gave its first public demonstr... Read More »