November 21

Today in Science

Invention of the Phonograph

Thomas Alva Edison was an American inventor, scientist, and businessman whose inventions changed the world. On November 21,1877, Edison announced his invention of the phonograph, a hand-cranked, tinfoil covered cylinder that could reproduce recorded sound.  It marked the first time in history that a person's voice could be recorded and saved.

His first recording was "Mary had a little lamb, its fleece was white as snow." 

Be inspired by Edison, his famous inventions, and other innovations using these Science NetLinks resources:

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