Encyclopedia > Supersonic

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Any speed over the speed of sound is said to be supersonic. Many modern fighter aircraft are supersonic. The Concorde is a supersonic passenger aircraft, currently the only one flying. Speeds greater than 5 times the speed of sound are sometimes referred to as hypersonic.

See also:

sound barrier
Mach number

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Thomas a Kempis

... to the school at Deventer conducted by the Brethren of the Common Life[?]. He became skilful as a copyist and was thus enabled to support himself. Later he was ...

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