defr Glossar

Distribution of the intensity of electromagnetic radiation as a function of wavelength. The range of interest for industrial photometry comprises that of light waves, i.e. visible, ultraviolet, and infrared light. Spectra produced by prisms or gratings make the spectral colours of the respective light visible, starting from short-wave violet and on through blue, green, yellow and orange to long-wave red. Absorption spectroscopy

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René Gehri
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