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Is it possible to tell sunrise from sunset in an image? (Part 2)

An ex-postman recalls his vivid memories of the colours of dawn, and the discussion continues about the famous depiction of a sunset by the painter J. M. W. Turner

19 April 2023

New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Marco Bottigelli/Getty Images

Is it possible to distinguish sunrise from sunset from an image (i.e. with no knowledge of the direction in the sky or time of day, and in a time frame with no discernible solar motion)? (continued)

Quentin Macilray
Poole, Dorset, UK

Speaking from experience in a previous incarnation on an early morning postal round, I can report that the colours of the early morning are incomparably more delicate and varied than those of the sunset. They range from grey to violet to subdued purplish to many shades of green and orangish and finally gold, and there are hundreds of gradations…

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