Sujet

Method of projecting the sun's image

Légende

Method of projecting the sun's image through a refracting telescope onto a screen in a darkened room (camera obscura) in order to study sunpots. From "Selenographia" by Johannes Hevelius (Gedani, Gdansk. Danzig, 1647). Engraving.

Info+

Photos12.com - Ann Ronan Picture Library

Crédit

Photo12/Ann Ronan Picture Library

Notre référence

ARP07113_010550P

Licence

Droits gérés

Format disponible

31,3Mo (2,8Mo) / 26,1cm x 30,0cm / 3085 x 3543 (300dpi)