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Bamboo Dragonfly

Bamboo Dragonfly

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The bamboo-copter, also known as the bamboo dragonfly or Chinese top (Chinese zhuqingting 竹蜻蜓, Japanese taketombo 竹蜻蛉), is a toy helicopter rotor that flies up when its shaft is rapidly spun. This helicopter-like top originated in Warring States period China around 400 BCE, and was the object of early experiments by George Cayley, the inventor of modern aeronautics.[1]

In China, the earliest known flying toys consisted of feathers at the end of a stick, which was rapidly spun between the hands and released into flight. "While the Chinese top was no more than a toy, it is perhaps the first tangible device of what we may understand as a helicopter."[1]

(par Bambusa spāri lasiet  wikipedia)

  

31.01.2017.