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" I am of opinion that the syren, performing from 2000 to 2400 revolutions a second, or, in other words, generating from 400 to 480 waves per second, best meets the atmospheric conditions. "We varied the pressure from 40 to 80 Ibs. on the square inch ;... "
Philosophical Magazine - Page 363
1874
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Proceedings of the Royal Society of London, Volume 22

Royal Society (Great Britain) - Electronic journals - 1874 - 664 pages
...the experiments were not directed to determine the transmissive power of the air, we were not without proof that it continued to be high. From 10 to 10.30...a rainy day with strong wind. Up to a distance of 5£ miles the syren continued to be heard through the sea- and paddlenoises. In rough weather, indeed,...
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Proceedings of the Royal Society of London, Volume 22

Royal Society (Great Britain) - Electronic journals - 1874 - 644 pages
...considered, was a far more perfect day, the 18-pounder, howitzer, and mortar failed to make themselves'heard at half this distance. The 18th was mainly occupied...a rainy day with strong wind. Up to a distance of 5 1 miles the syren continued to be heard through the sea- and paddlenoises. In rough weather, indeed,...
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The Popular Science Review: A Quarterly Miscellany of ..., Volume 13

James Samuelson, Henry Lawson, William Sweetland Dallas - Science - 1874 - 510 pages
...fluctuations of the atmosphere into account, I am of opinion that the syren, performing from 2,000 to 2,400 revolutions a second, or, in other words, generating...a rainy day with strong wind. Up to a distance of 5£ miles the syren continued to be heard through the sea and paddle-noises. Iu rough weather, indeed,...
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Report of a Tour of Inspection of European Lighthouse Establishments, Made ...

United States. Light-House Board, George Henry Elliot - Lighthouses - 1874 - 396 pages
...into account, I am of the opinion that the siren, performing from 2,000 to 2,400 revolutions a minute, or, in other words, generating from 400 to 480 waves...atmospheric conditions. We varied the pressure from 40 to 80 pounds on the square inch, and though the intensity did not appear to rise in proportion to the pressure,...
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Notices of the Proceedings at the Meetings of the Members of the ..., Volume 7

Royal Institution of Great Britain - Science - 1875 - 588 pages
...bocond, or, in other words, generating 174 Professor Tyndall on the Acoustic Transparency "Jan. 16. from 400 to 480 waves per second, best meets the atmospheric...was a rainy day with strong wind. Up to a distance <•{ 5j miles the syren continued to be heard through the sea- ami paddlenoises. In rough weather,...
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The Journal of the Royal institution of Great Britain. Notices of ..., Volume 7

Royal institution of Great Britain - 1875 - 584 pages
...words, generating from 400 to 480 waves per second, best meets the atmospheric conditions. We vuried the pressure from 40 to 80 Ibs. on the square inch ; and though the intensity did not appear to rise iu proportion to the pressure, the higher pressure yielded the hardest and most penetrating sound....
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Notices of the Proceedings at the Meetings of the Members of the ..., Volume 7

Royal Institution of Great Britain - Science - 1875 - 576 pages
...atmosphere into account, I am of opinion that the syren, performing from 2000 to 2100 revolutions a socouJ, or, in other words, generating from 400 to 480 waves...and most penetrating sound. The 20th was a rainy day witli strong wind. Up to a distance of 5^ miles the syren continued to be heard through the sea- and...
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Parliamentary Papers, Volume 60

Great Britain. Parliament. House of Commons - Bills, Legislative - 1874 - 602 pages
...fluctuations of the atmosphere into account, I am of opinion that the syren, performing from 2,000 to 2,400 revolutions a second, or, in other words, generating...a rainy day with strong wind. Up to a distance of 5^ miles the syren continued to be heard through the sea and paddle noises. In rough weather, indeed,...
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The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science

Physics - 1874 - 1094 pages
...other words, generating from 400 to 480 waves per second, best meets the atmospheric conditions. VVre varied the pressure from 40 to 80 Ibs. on the square...a rainy day with strong wind. Up to a distance of 5i miles the syren continued to be heard through the sea- and paddle-noises. In rough weather, indeed,...
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Notices of the Proceedings, Volume 7

Royal Institution of Great Britain - Science - 1875 - 576 pages
...waves per second, best meets the atmospheric conditions. We varied the pressure from 40 to 80 lbs. on the square inch ; and though the intensity did...a rainy day with strong wind. Up to a distance of 5^ miles the syren continued to be heard through the sea- and paddlenoises. In rough weather, indeed,...
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