burning glass

Made:
1780-1800
Burning glass, large double convex lens (unsigned)

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Burning glass, large double convex lens (unsigned)
Science Museum Group Collection
© The Board of Trustees of the Science Museum, London

burning glass, large double convex lens (unsigned), mounted on mahogany pillar stand, English, c. 1790. Lens made of crown glass with focal length of 7-inches.

Details

Category:
Experimental Chemistry
Object Number:
1954-349
Materials:
mahogany (wood), glass and wood (unidentified)
Measurements:
overall: 540 mm x 265 mm x 220 mm, , 5.31kg
type:
lens
credit:
National Maritime Museum