Random Facts about the Speed of Sound

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Random Facts About the Speed of Sound
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Random Facts about the Speed of Sound

Random Facts about the Speed of Sound

THE SPEED OF SOUND.
It has been ascertained that a full human voice, speaking in the open air, calm, can be heard at a distance of 400 feet; in an observable breeze a powerful human voice with the wind is audible at a distance of 15,840 feet; the report of a musket, 16,000 feet; a drum, 10,560 feet; music, a strong brass band, 15,840 feet; very heavy cannonading, 575,000 feet, or 90 miles. In the Arctic regions conversation has been maintained over water a distance of 6,766 feet. In gases the velocity of sound increases with the temperature; in air this increase is about two feet per second for each degree centigrade. The velocity of sound in oxygen gas at zero C. is 1,040 feet; in carbonic acid, 858 feet; in hydrogen, 4,164 feet. In 1827 Colladon and Sturm determined experimentally the velocity of sound in fresh water; the experiment was made in the Lake of Geneva, and it was found to be 4,174 feet per second at a temperature of 15 degrees C. The velocity of sound in alcohol at 20 degrees C. is 4,218 feet; in ether at zero, 3,801; in sea water at 20 degrees C., 4,768. By direct measurements, carefully made, by observing at night the interval which elapses between the flash and report of a cannon at a known distance, the velocity of sound has been about 1,090 per second at the temperature of freezing water.

 

Facts and Useful Information, written in 1889 by Barkham Burroughs
 

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