Why UV-Vis Spectrophotometer scans from higher wavelength to lower?

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Ademario Junior

I never noticed that all of the scanning type work this way. However, instruments with CCD and DAD detectors don't scan anymore since they "photograph" the whole spectrum at once. And I think the no-scanning type is now mainstream.

Agnishwar Girigoswami

Professor Ademario Junior, thank you for your response.

You are welcome.