The mathematical and philosophical works of the Right Reverend John Wilkins ... to which is prefix'd the author's life, and an account of his works (1708)
Wilkins, John, 1614-1672, Pre-1801 Imprint Collection (Library of Congress), George Fabyan Collection (Library of Congress) · London, Printed for J. Nicholson [etc.] · leaf 557
rpetual. But for the better conceiving of this Invention, itis requifite that we rightly underftand fome Princi-ples in Trochilicks, or the Art of Wheel-Inftruments :As chiefly, the Relation betwixt the Parts of aWheel, and thofe of a Ballance ^ the feveral Pro-portions in the Semidiameter of a… … Thus^ fuppofe the Center to be at J, and theDi-ameter of the Wheel DC to be divided into equalParts (as is here exprelTedj it is evident, accordingto the former Ground, that one Pound at C willequiponderate to Five Pound at B, becaufe there isfuch a proportion betwixt their feveral Diftancesfrom…
Science · Plurality of worlds · Mechanics · Cryptography
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![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-77-8.webp)
