Videos Tagged: China

History
History of Helicopters
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The earliest invention for vertical flight that we know comes from China. It is known that since 400 years BC, children in China played with bamboo flying toys. Children attached a stick to a ro...

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George recognized that rock oil, a liquid that oozed from rocks, could actually be used as an illuminant. He and his bus...
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According to Saudi Arabia officials, the city will create around 460,000 jobs and add $48 billion to the country’s GDP
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Born in July 1964, he is an American professional poker player. He has won a record 16 World Series of Poker Bracelets. ...
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Bite force is measured in pounds per square inch, or PSI. It is pound force per square inch, the pressure from a one pou...
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The Colorado Potato Beetle, also known as the Colorado Beetle, is a major pest of potato crops. Its Latin name is Leptin...
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