Circular Glass Mirror, Silver and Platinised, by Leon Foucault, 1857-1868
1857-1868
Circular glass mirror (80 mm)
1960-1970
Silvered and platinized glass (Foucault)
1857-1868
Glass disc for telescope mirror
1840-1870
Glass wedge mirror aluminised on the hypotenuse surface
1960-1970
Circular planar mirror, 15-mm diameter
1960-1970
Circular mirror, 80-mm diameter
1960-1970
Circular mirror, 3.4-inch diameter
1960-1970
Circular mirror, 10-inch diameter
1960-1970
25-mm diameter, low expansion glass mirror
1960-1970
Planar mirror, 25-mm diameter
1960-1970
25-mm diameter, low expansion glass mirror
1960-1970
25-mm diameter, low expansion glass mirror
1960-1970
Circular mirror, 40-mm diameter
1960-1970
Circular mirror, 40-mm diameter
1960-1970
Circular mirror, 4-inch diameter
1960-1970
Circular mirror, 8-inch diameter
1960-1970
15-mm diameter, low expansion glass mirror
1960-1970
25-mm diameter, low expansion glass mirror
1960-1970
30-mm diameter, low expansion glass mirror
1960-1970
Silver-on-Glass Telescope Mirror
1865-1890
Circular glass mirror (10 1/2-inch)
1950
Circular glass mirror (4 1/2-inch)
1934
Silvered glass telescope mirror of diameter 9 1/2 in
1880-1900
Circular glass mirror (5 1/2-inch)
1930-1939
Six and a half inch glass mirror in original brass cell
1780-1820
Collection of 15 aluminium coated glass or quartz mirrors
1960-1970
Silvered and platinized glass (Foucault) in small wooden box
1857-1868
Bromide print related to and showing various stages in the construction of the Hooker 100-inch reflecting telescope
1916-1918
Circular glass mirror (6-inch)
1960-1970
Bromide print related to and showing various stages in the construction of the Hooker 100-inch reflecting telescope
1916-1918
Bromide print related to and showing various stages in the construction of the Hooker 100-inch reflecting telescope
1916-1918
Silver-on-glass mirror of 9-inch aperture by G.H.With
1865-1890