A whirly tube (a tube of corrugated plastic, also known as a corruga tube) is whirled in circles at different speeds producing resonance at different pitches, along with overtones. Details of the ...
来自MSN7 个月
Whirly great escape: Inside the remarkable holiday rental that was once a Royal Navy helicopterInside the flight that took the actual Olympic flag to Los Angeles This is a holiday rental where a whirly-good time is guaranteed. Because it's a former Royal Navy helicopter. With a gorgeous ...
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