Demainbray's scioptric ball
1745-1755
Demainbray's convex lens
1750
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's turquoise disc
1745-1755
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's yellow disc
1745-1755
Demainbray's model of a camera obscura
1752
Brass demonstration polariscope with biaxial crystal
1830-1880
Bridge's diffraction demonstration apparatus
1860-1890
oscillating prism
1873-1877
Demonstration apparatus showing recomposition of light dispersed by a prism
"Milky" prism which produces Rayleigh scattering
Combination of 3 prisms to show achromatism
1872
Demonstration polariscope with six mineral crystals in rotating mount.
1830-1880
Distorting viewer: two prisms in cardboard case
1850-1924
Black glass pyramidal prism
1872
Perspex prism fitted with two magnets
1900-1983
(Adjustable) complementary prism
1872
Demonstration polariscope with red leather case.
1830-1880