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Charles Guillaume Alexandre Bourgeois (16 December 1759 – 7 May 1832) was a French physicist and painter.

As a painter, he's known by his gray camaïeux; some of his portraits are in the Musée du Louvre.

As a physicist, he was an important optician. His two main works are:

• Leçons expérimentales d'optique sur la lumière et les couleurs destinées à rétablir dans leur intégrité les faits dénaturés par Newton (1816–1817)
• Manuel d'optique expérimentale à l'usage des artistes et des physiciens (1821).

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  Maria Letizia Ramolino.
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  Jean Gaspard Vence, French privateer and Admiral ( Musée du Louvre).

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