Sketch depicting a method of calculating the sun's elevation. One man keeps the instrument level,while the other man makes adjustments and reads the elevation in degrees. Sketch by R. Dudleo,From Dell'Arcano del Mare,Florence,1647; Riccardiana Library,Florence,Italy | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Tortoli, Gianni |
Taille de l’image : | 3550 px × 3172 px |
Model Release : | Non requis |
Property Release : | Non requis |
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