Beschreibung:

8 . (190 x 115 mm) (4), 178 pp. with two fold. engraved plates. Modern calf period style, red edges. Used. 178 Seiten mit zwei gefalteten gestoch. Tafeln. Halblederband im Stil der Zeit. Roter Schnitt, Name am Titel: Bertini.

Bemerkung:

First edition, rare work on optics and optical instruments. Alexis-Marie de Rochon, known as Abbé Rochon, was born in Brest, France in 1741 and died in Paris in 1817. He was a French astronomer, physicist and traveler. He traveled to Africa on an exploring mission to determine the possibility of establishing new trading posts for commerce with the East Indies and China. His trip, journal, and the mapping of the island Madagascar was one of the first from a European. He is also known for his work on lens design and crystal optics, inventing the Rochon prism polarizer. The essays are: Memoire sur les moyens de perfectionner les instrumens dioptriques (pp. 1-50), Memoire sur les moyens de rendre l? heliometre de Mr. Bouguer, (pp. 51-66), Memoire sur la determination des longitudes en mer (pp. 67-96) Memoire sur l?art de tailler & polir les verres & mirroirs des telescopes dioptriques & catoptriques (pp. 129-144)