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Direct linkThompson, Frank – Physics Education, 2022
An absorption line at 900 nm has been observed in Perspex. Samples of 1 and 2 cm thickness were used and the integrated absorption (line width times peak absorption) of the line was proportionate to the thickness. Facilities for lowering the sample temperature were not available and therefore both measurements were carried out at room temperature.…
Descriptors: Spectroscopy, Chemistry, Physics, Climate
