Laurent Cassegrain

See also: Cassegrain

Laurent Cassegrain (born in the area of Chartres about 1629 - died with Chaudon the August 31st 1693) was a priest and Physicien French. He was professor of sciences to the college Pocquet of Chartres and cleaned of Chaudon (Eure-et-Loir). Laurent Cassegrain is at the origin of the Télescope of the type Cassegrain, comprising a parabolic primary education and a hyperbolic convex secondary, contrary to the telescope of Gregory whose secondary is a concave ellipse.

See too

References

Christiaan Huygens, Reflections on the description of glasses published under the name of Mr. Cassegrain (letter #1892, addressed to Welsh Jean), '' complete Œuvres '', vol. 7, pp. 189-191, 1888.
Andre Baranne and Francoise Launay, '' Cassegrain: famous unknown has instrumental off astronomy '', Journal off Optics, 1997, vol. 28, No 4, pp. 158-172 (15).

External bonds

Laurent Cassegrain, contemporary of Newton on the site of the commune of Chaudon.

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