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ID number: BIRRC-P0304 Institution: Research and Cultural Collections Named collection: Historic Physics Collection Artist / Maker: Adam Hilger Ltd Title / Object name: Spectrometer - constant deviation Object type: Optical instrument Place made: London Date made: 1909 Materials: Lacquered brass tubes on heavy steel base Measurements: 56 x 58 x 40 cm |
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This optical spectrometer is designed for use with a five-faced Pellin-Broca prism (shown in photo but not included in collection). The collimator and telescope are fixed for a deviation of 90º and the prism is turned by a calibrated micrometer drive to send different wavelengths into the telescope. Between the collimator and the prism is a table turned by a micrometer screw to accommodate an interferometer. |
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