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Physics & Astronomy Facts


Kinetic Theory of Gases

Air is a gas, and gases can be studied by considering the small scale action of individual molecules or by considering the large scale action of the gas as a whole. We can directly measure, or sense, ...

Fission and Fusion

In the nuclear fission process, a heavy atomic nucleus spontaneously splits apart, releasing energy and an energetic particle, and forms two smaller atomic nuclei. While this is a normal, natural proc ...
Sound is just a sensation created in the human brain in response to small pressure fluctuations in the air.
The Doppler Effect

As any object moves through the air, the air near the object is disturbed. The disturbances are transmitted through the air at a distinct speed called the speed of sound, because sound itself is just ...

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