Fresnel lighthouse optic

Made:: 1890-1900 in England and Borough of Birmingham

manufacturer:: Chance Brothers Limited

inventor:: Augustin Jean Fresnel and Georges Louis Leclerc

Ninety degrees, section of a fixed-lens (4th-order) lighthouse optic, 36 inches high, (internal crack in top prism) by Chance Brothers, Birmingham, England, c. 1895.

Details

Category:: Optics

Object Number:: 1958-102

Materials:: glass, metal (unknown), copper (alloy), brass (copper, zinc alloy) and putty

Measurements:: overall: 915 mm x 440 mm x 310 mm, ,

type:: lighthouse lamps and optics

credit:: Stevenson, A.D.

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Fresnel lighthouse optic

Details

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