The Mpemba effect

The Mpemba effect

The Mpemba Effect is a counter-intuitive phenomenon whereby, under certain circumstances, warm water can freeze faster than cold water. Although this phenomenon was known for a long time by many philosophers and scientist, including Aristotle...

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How small insects fly?

How small insects fly?

It is widely acknowledged that the flight principle of biological flapping wings (birds, bats and insects) is different from the one of the fixed wings (flight vehicles). For a cruising aeroplane, gases around the wings can be simplified to the...

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