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File:Huyghens - Traité de la lumière - Fig. 60.svg

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Captions

Captions

Parallel light beams focused by a parabolic mirror (taken from Huygens, ''Treatise on Light'', 1690).

Summary

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Description
Français : Huygens, Traité de la lumière, 1690. — Fig. 60 : Focalisation de rayons lumineux parallèles par un miroir parabolique.
English: Huygens, Traité de la lumière (Treatise on Light), 1690. — Fig. 60 : Parallel light beams focused by a parabolic mirror.
Español: Huygens, Traité de la lumière (Tratado de la luz), 1690. — Fig. 60 : Focalización de rayos paralelos por un espejo parabólico.
Date
Source Huygens, Traité de la lumière, 1690.
Author Creator:Christiaan Huyghens (SVG drawing by ElioPrrl)

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Public domain

The author died in 1695, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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