EULER, LEONHARD. - ATMOSPHERIC REFRACTION OF LIGHT.

De la Réfraction de la Lumiere en passant par L'Atmosphere selon les divers Degrés tant de la Chaleur que de L'Élasticité de L'Air.(Concerning the refraction of light while passing through the atmosphere and the different degrees dependent on heat as to the elasticity of the air).

(Berlin: Haude & Spener, 1756) 4to. No wrappers as extracted from 'Mémoires de l'Academie Royale des Sciences et Belles Lettres', Bd. X, pp. 131-172 a. 1 engraved plate.

A main paper on atmospheric refraction, and Euler's earliest on the subject. He treats the subject mathematically and relates refraction to the density of the air, given the relevant formulas. - Enestroem E 219.

Order-nr.: 41899