Accession No
2539
Brief Description
spectro-polarimeter, by Adam Hilger Ltd., English, 1910 (c)
Origin
England; London
Maker
Adam Hilger Ltd.
Class
optical; astronomy
Earliest Date
1910
Latest Date
1910
Inscription Date
Material
metal (steel, brass, oxidised brass, cast iron); glass
Dimensions
length 1510mm; breadth 490mm; height 435mm
Special Collection
Provenance
Transferred from the Department of Chemistry, University of Cambridge, Cambridge, England, 1978.
Inscription
‘ADAM HILGER LTD
LONDON’ (beside prism table)
‘ADAM HILGER LTD
LONDON’ (on analyser circle)
Description Notes
Combined wavelength spectrometer, polariser and analyser. Spectrometer slit, steel jaws open symmetrically against spring by steel cone moved by screw, drumhead divided 0-10. Slit on draw tube, with cover. Brass collimator, clamped to two standards by knurled screws. Prism on oxidised brass platform held by arm and clamp. Brass polariser with inclination adjustment and clamp. Analyser with telescope, steel circle divided 0-360 by 1˚, subdivided to 10’ (?Poor light in store), 2 verniers, arm with mounts for two reading microscopes (one missing), clamp and tangent screws: knurled screw at eye-end connects via brass rod to rotating motion of prism, with steel (?) drum calibrated by wavelength. Painted cast iron stand, 3 legs with separate feet.
References
Events
Description
Spectro-polarimeters measure the angle of optical rotation of polarized light. When polarized light is passed through a sample, the plane of polarization is altered in a manner characteristic of the substances in that sample. Polarimeters can be used to identify the different components in a chemical substance by analysing the change in the plane of polarization.
Created by: Unknown
FM:43366
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