Videos Tagged: invention

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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Latest Articles
The Wright brothers were always interested and fascinated by flight. They attribute their interest in aviation to a smal...
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Persepolis was the capital of the Persian Achaemenid Empire, starting from the reign of Darius I, until its destruction ...
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In the 19th century, people thought causes of fever include injury, bad air, violent emotion, or even irregular bowel mo...
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There are two common subtypes of bipolar disorder, bipolar I and bipolar II. There are other subtypes but these two are ...
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Her status as a cultural icon endures more than 90 years after her birth. And it is all thanks to the lasting legacy of ...
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