
proposed to the Contemplation of Naturall philosophers, whether the surprizing phenomena of the Elasticity of the air and some other fluids may not arise from their being composed of particles which flie each other, which being rather a physicall than Mathematicall Inquirie our Author forbears to discuss. Next the Opposition of the Medium and its effects on the Vibra tions of the pendulum is considered, which is followed by an inqu iry into the rules of the opposition to bodies, as their bulk, shape or density may be varied <s>where among other things the motion of water running through a hole in a vessel is determined <\s> here with great exactness is an account given of severall Ex periments tried with pendula in order to verifie the afore going speculation, and to determine the quantitie of the Airs opposition to bodies moving in it. From thence is proceeded to the undulation of fluids, the laws wherof are here laid down, and by them the <s>phenomena <\s> motion & propagation of light and sounds are explained. The Last section of this book is concerning the circular motion of fluids wherin the nature of <u>their Verticall Motions is considered and from thence the Cartesian doctrine of<\u> the Vortices of the Celestiall matter carring with them the Planets about the Sun is proved altogether impossible. The IIId and last book is entituled de Systemate Mundi, wherin the demonstrations of the two former books are applyed to the explication of the ..l phenomena of nature: Here the verity of the Hypothesis of Kepler is demonstrated; and a full solution given to all the difficulties that occurr in the Astro
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Manuscript details
- Author
- Edmond Halley
- Reference
- CLP/21/13
- Series
- Cl.P
- Date
- 1687
- IIIF
-
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Cite as
Of Newton's Principia , 1687. From The Royal Society, CLP/21/13
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