History’s Top 10 Inventions

longknife

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Sep 21, 2012
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The tea bag for heaven’s sake?

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I certainly agree with the wheel. The rest? Hmmm.

The article @ Teabags appear in top ten inventions alongside the clock | Daily Mail Online
 
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Westend61/Getty Images

The telephone is an instrument that converts voice and sound signals into electrical impulses for transmission by wire to a different location, where another telephone receives the electrical impulses and turns them back into recognizable sounds. In 1875, Alexander Graham Bell built the first telephone that transmitted electrically the human voice.
 

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