The Seventh Instance. Of Sounds.
LEt there be many Equal Sounds; I say, that the Distances, at which they
The discourse made before the Royal Society the 26. of November, 1674, concerning the use of duplicate proportion in sundry important particulars together with a new hypothesis of springing or elastique motions / by Sir William Petty, Kt. ...
About this Item
- Title
- The discourse made before the Royal Society the 26. of November, 1674, concerning the use of duplicate proportion in sundry important particulars together with a new hypothesis of springing or elastique motions / by Sir William Petty, Kt. ...
- Author
- Petty, William, Sir, 1623-1687.
- Publication
- London :: Printed for John Martyn ...,
- 1674.
- Rights/Permissions
-
To the extent possible under law, the Text Creation Partnership has waived all copyright and related or neighboring rights to this keyboarded and encoded edition of the work described above, according to the terms of the CC0 1.0 Public Domain Dedication (http://creativecommons.org/publicdomain/zero/1.0/). This waiver does not extend to any page images or other supplementary files associated with this work, which may be protected by copyright or other license restrictions. Please go to http://www.textcreationpartnership.org/ for more information.
- Subject terms
- Physics -- Early works to 1800.
- Atomic structure -- Early works to 1800.
- Link to this Item
-
http://name.umdl.umich.edu/A54611.0001.001
- Cite this Item
-
"The discourse made before the Royal Society the 26. of November, 1674, concerning the use of duplicate proportion in sundry important particulars together with a new hypothesis of springing or elastique motions / by Sir William Petty, Kt. ..." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A54611.0001.001. University of Michigan Library Digital Collections. Accessed June 15, 2024.
Pages
Page 71
may be heard, are the Roots of the Numbers of such Sounds. For, four Musquets will be heard twice as far as one, and nine thrice; and so of the rest. By which reckoning, the hearing of some of our Fleets Engagement with the Dutch even to S. Iames's Park near this City is ea∣sily solved; and the truth of that Observation doth reciprocally countenance this Doctrine. For sup∣pose both Fleets (consist∣ing
Page 72
of two hundred Ships great and small) had a∣bout 12000 pieces of Ord∣nance on board them, which at a Medium suppose to be Demi-Culverins: Suppose also, that a Demi∣culverin, with the same cir∣cumstances of Wind and Air, may be as easily heard five miles, as the said En∣gagements were heard 160 miles. Then I say, that 1024 of the said 12000 Guns firing together, or very near the same time,
Page 73
might (as they were) be well heard 160 miles; and that about 4000 such Guns might as well be heard 300- miles, as one Demi-Cul∣verin five miles; which last point I add, to prevent the unbelief of a probable mat∣ter, when it shall happen. Now what effect this had in the Popes Presage of the Battel of Lepanto, I know not.