General catalogue of the manufactures of Adam Hilger, Ltd (1928)
Hilger, Adam · London EN · leaf 77
rnal, December 1908). The co-efficient expansion of fused silica being less than that of any other known material (0-000,000,59 per 1 C—about one-seventeenth part of that of platinum) temperature alterations can be entirely avoided quite easily. The plates are silvered by cathodic deposition from… … f% 0 3. intensity maxima is thus fulfilled. The plates are made slightly wedge-shaped in the usual manner to avoid the secondary interference systems caused by reflection at the unsilvered outer surfaces; but the angles of the wedges are the same in each plate, and they are so mounted that the…
Spectrometer
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