zoew09

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Question:

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__Who do you think the most important inventor is of the 19th centery?__ I think that the most important inventor is Thomas Edison. I belive that he is the greatest inventor because he invented the electiric pen, motion pictures, the tinfoil phonograph, and more.====== http://www.flickr.com/photos/sftrajan/1370070318/sizes/s/

**__The Tin Foil Phonograph- __**
===The tinfoil phonograph was invented by thomas edison in October of 1877. He was working on the telephone transmitter, when he thought of recording and playin back telephone messages.The first phonograph was made up of a grooved cyilnder mounted on a long shaft with a screw pitch of ten threads per inch and turned by a hand crank. He used tinfoil and put it around each cylinder as a recording surface.===

**__The Electric Pen- __**
===The eletric pen was also invented by Thomas Edison. It was made in the fall of 1875. The pen was made up of a cast iron holder with a wooden insert, a wet-cell battery on a cast iron stand, and a cast iron flatbed press with ink roller.All cast iron parts were black with gold for decoration.The hand held eletric pen was powered by a wet-celled battery, which was wired to an eletric motor put on top of a pen like device.===

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