concave and convex lens effects, vintage engraving - Vintage Nostalgia
concave and convex lens effects, vintage engraving

Optics, concave and convex lens effects, light focus converging, diverging and reflection

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concave and convex mirror effects, vintage engraving - Vintage Nostalgia
concave and convex mirror effects, vintage engraving

Optics, concave and convex mirror effects, light focus converging, diverging and reflection

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Fresnel lens (lighthouse lens) working and section - Vintage Nostalgia
Fresnel lens (lighthouse lens) working and section

Wood engraving drawn by A. Jahandier, engraved by C. Laplante, taken from from “L’√®lectricit√®” by J. Baille, Paris – Hachette 1868. Multi-part lens for use in lighthouses developed by Augustin-Jean Fresnel, French physicist.

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