Question

 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 »
http://www.answerbag.com/q_view/2048886

Top Q&A For: When did Thomas Edison invent the perfected pho...

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 »
http://www.answerbag.com/q_view/2117248

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 »
http://www.answerbag.com/q_view/2393584

When did Thomas Edison invent the indoor light bulb?

Thomas Edison developed his most famous invention, the indoor incandescent light bulb, in 1878. Edison was able to introduce a light bulb that lasted 1,200 hours, compared to today's average light ... Read More »
http://www.answerbag.com/q_view/1939386

When did thomas Alva Edison invent the movie projector?

Thomas Alva Edison invented and patented the movie protector in 1891, making it possible to take, reproduce and project images. During his lifetime, he received 1,368 patents on his inventions. He ... Read More »
http://www.answerbag.com/q_view/2046735


feedback
loading