Surface tension

Surface tension is the property of a liquid that allows it to obtain the smallest surface area possible.

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Waves are formed when a disturbance propagates through a medium.

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In rock-paper-scissors, the least popular choice of players is paper. But is it really the...

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Submarine operation

Submarines submerge and surface by changing the average density of the hull.

Hot air balloon

A hot air balloon is a balloon aircraft in which is lifted by hot air.

Beverage machine - Part 1

Is it possible to turn pure water into a soft drink in a few seconds?

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