EULER, LEONHARD.

Recherches sur la Déclination de L'Aiguille aimantée. (And:) Corrections Nécessaires pour la Théorie de la Déclination. (And the same author:) Sur la Force de Colonnes.(Research concerning the declination of the magnetized needle - The necessary correction to the theory of the magnetic declination which was proposed in volume XIII of the Memoirs - Concerning the strength of Columns).

(Berlin, Haude et Spener, 1759-68). 4to. Without wrappers extracted from "Mémoires de l'Academie Royale des Science et Belles-Lettres", tome XIII, pp. 175-251 and 4 folded engraved plates, tome XXII, pp. 213-264 and 2 engraved plates., tome XIII, pp.and 1 folded engraved plate.

All 3 papers all in first edition. Euler's proposed theory of magnetic fields influenced both Faraday and Maxwell. Euler viewed the magnetic field as waves through the ether, jus like his theory of light was founded on the existence of the ether. - Enestrom E 237 + E 362 and E 238.

Order-nr.: 39097