A "huge explosion sound" was heard over Norwich this afternoon - with many people believing it was a sonic boom. The loud bang was heard over the city centre at around 4.30pm on Monday. It came while ...
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The sound barrier is something many people have heard of, but few understand, as it's somewhat of a misnomer. The speed of sound is known as Mach 1 (767 mph), and when an object moves beyond this, ...
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