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Title: Exposed spectrographic plates [Go to resource]
Description: "Brown box labelled 'Ilford Thin Film Half-tone Plates' containing 7 spectrographic plates, the top two dated April 1937. The box has handwriting on the lid, mainly numbers but the words ""Ext Coeffs: Acrylic NItrile/ Methyl Methacrylate/ Amyl Acetate"". The plates are 10 inch (253 mm) by 4 inches (101 mm), adjacent plates separated by a sheet of thin paper; all have a hand-written paper label on the right High quality research spectra from acrylic nitrile in hexane solution or methyl methacrylate. The plates were in the Department of Chemistry and are: a) paper label on right ""Plate 1/ Acrylic Nitrile/ 0.204 gm in 10cc C6H12/ 2 cm tubes/ 25.4.37/ ODs 0.1, 0.2...(25 numbers altogether) up to 1.8"". A thin paper label alongside identifies 25 spectra on the plate with these nunbers, increasing from the bottom up. There is also a similar spectrum above and below these 25 and 2 additional spectra, different from the ones below, for calibration at the top. A third strip of paper at the foot identifies particular lines, from right to left ""3100, 3018, 3000....2360, 2333"" 25 lines in all. The spectra fade out to the left after this. b) Similar to plate 1 ""Plate 2/ ODs as plate 1/ 4 cm tubes/"" rest of information same as plate 1 c) No plate number, no date. ""Acrylic nitrile in hexane/ 0.2015 gm in 10cc C6H12"" 23 ODs increasing from top down. Calibration (non-uniform) scale with typeset numbers both top and bottom corresponding to the first two digits of the numbers marked on the previous two plates. d) Similar to previous plate ""Acrylic nitrile pure"" 22 ODs increasing top to bottom from 0 e) Paper label ""C6H12-C6H12/ numbers 0.0, 0.0, 0.1, 0.2, 0.3, ....1.5, 0.0 (19 spectra altogether) and calibration scales top and bottom f) Paper label ""Methyl Methacryl (pure)/ numbers 0.0, 0.1, ...1.4"" (24 spectra) with calibration scales top and bottom g) Paper label ""Methyl methacrylate pure (micro-cell)/ 0.05 cm, 0.1, 0.15, 0.2, 0.5"" (10 spectra with only top calibration scale" License: http://www.abdn.ac.uk/historic/Copyright_terms_conditions.shtml Publisher: ABDNP University of Aberdeen, Natural Philosophy Collection of Historical Scientific Instruments Rights holder: 47718 Temporal: 1937 Source: University of Aberdeen Identifier: http://calms.abdn.ac.uk/Geology/dserve.e... Go to resource More Like this...
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