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SPEED OF WAVES.
When the temperature of tha air is-thirty-two degrees, sound waves travel 1,090 feet a second ; and one ad-: ditional foot a second for each additional degree of temperature. Electric waves in theory travel at I 288,000 miles a second ; over a wire 1 where there is no resistance it; travels at the rate of 192,924 miles i a second.
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https://paperspast.natlib.govt.nz/newspapers/PGAMA19070517.2.7
Bibliographic details
Pelorus Guardian and Miners' Advocate., Volume 18, Issue 40, 17 May 1907, Page 2
Word Count
62SPEED OF WAVES. Pelorus Guardian and Miners' Advocate., Volume 18, Issue 40, 17 May 1907, Page 2
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