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Caused by air-pressure waves.(News)
From:
Daily Post (Liverpool, England)
| Date:
September 23, 2004
| COPYRIGHT 2004 MGN Ltd. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group.Copyright information
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A SONIC boom is an impulsive noise similar to thunder. It is caused by an object moving faster than sound -- about 750mph at sea level.
An aircraft travelling through the atmosphere continuously produces air-pressure waves, similar to the water waves caused by a ship's bow.
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