AMONTONS, (GUILLAUME). - ESTABLISHING THE LAW OF PROPORTIONALITY AND THE BASIC CONCEPT OF FRICTION.

De la Resistance cause'e dans les Machines, tant par les frottemens des parties qui les composent, que par la roideur des Cordes qu'on y employe, & la maniere de calculer l'un & l'autre.

(Paris, Jean Boudot, 1702). 4to. Without wrappers. Extracted from "Mémoires de l'Academie des Sciences. Année 1699". Pp. 206-227 a. 5 large engraved plates (tables). Textillustrations. Last leaf with a small paperloss in inner margin

First appearance of a milestone paper on the friction loss of energy in machines, hereby establishing the basic concepts of friction.

"In the same year (1699) Amontons produced the first known study on the question of losses caused by friction in machines. He then established the las of proportionality between friction an the mutual pressure of the bodies in contact." (DSB I, p. 138).

Order-nr.: 44387