Concave Rowland-type diffraction grating on speculum metal

Made:: 1882-1899

maker:: Henry Augustus Rowland

$Concave Rowland-type diffraction grating on speculum metal$

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Concave Rowland-type diffraction grating on speculum metal
Science Museum Group
© The Board of Trustees of the Science Museum

Concave Rowland-type diffraction grating on speculum metal, grating area 88 x 42 mm, in wooden box. Unsigned, but very similar to gratings made by Brashear and Rowland. Crystalline structure visible on polished surface.

Details

Category:: Optics

Object Number:: 2000-1441

Materials:: speculum metal and wood

Measurements:: grating block: 13 x 100 x 100 mm
box: 32 x 119 x 119 mm

type:: diffraction grating - reflection

credit:: Imperial College of Science,Technology & Medicine (Spectroscopy Group)

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Concave Rowland-type diffraction grating on speculum metal

Details

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