Illustratoin of a heliostat invented by the French physicist Leon Foucault (1819-1868). Heliostats are devices designed to track the sun across the sky and continually adjust their mirror to reflect the sun's rays to a fixed location. From 'Les Applications de la Physique' by Amedee Guillemin, Paris, 1874. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Collection Abecasis |
Taille de l’image : | 3390 px × 2837 px |
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Property Release : | Non requis |
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