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Results tagged with visible-light
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user 133289
Questions related to the perception and measurement of light (primarily in the visible range), its mathematical description, the reproduction of colors by different means, color combinations, etc. Please use the tag [electromagnetic-radiation] if you want to refer to the general form of light.
12
votes
Why is sky on Mars red?
With great thanks to the wonderful Dr Eriita Jones of the University of South Australia...
Mar's reddish sky is due to a combination of:
The amount of airborne dust (there's a lot of it - due to t …
- 1,146
2
votes
Why is the colour of sunlight yellow?
It's not. It's white.
At least, most of the time it's white. When the Sun is near the horizon, and its light is passing through ~2000km of atmosphere rather than through only ~20km, then the blueish …
- 1,146
18
votes
1
answer
3k
views
Why is sky on Mars red?
There are some great explanations on StackExchange of why we see a blue sky on Earth, eg here.
Namely, that it's a combination of :
(a). the mix of colours from the Sun (eg, more green than indigo) …
- 1,146