- cross-posted to:
- askscience@lemmy.world
- youshouldknow@lemmy.world
- cross-posted to:
- askscience@lemmy.world
- youshouldknow@lemmy.world
The sun is not yellow or orange as we see in books and movies. It emits all the colours in the visible spectrum (also in other spectrums as well) making it white!
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White is defined by the color of the sun. Since we evolved within its light we of course see the distribution of wavelengths that make it down to Earth’s surface as white. Even if the sun was always orange, we would see that as white instead.
Do you have a source for that claim? There is no way we can validate that without sending humans to another solar system. And wait thousands of years.
Surely it is plausible that an organism that evolved vision under particular lighting conditions would develop vision adapated to those lighting conditions.
I’m not telling you it’s not worthwhile to come up with ways to test the claim if you want to be rigorous (e.g. you could measure the wavelength sensitivities of the vision of nocturnal or underwater animals and see if there’s a pattern). But to me it’s pretty self-evident as a starting point at least.
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Why do we see it as yellow, then?
Because our atmosphere causes “scattering” of hues in the highest frequencies. This is the same reason the sky appears blue.
Could also be redshift too. I don’t know enough about it to know if we’d notice it over such a short distance and of a constant source, though. Definitely noticeable as reciprocity failure during long exposures in photography.
No, that’s not at all what redshift is.
And neither redshift nor dopplershift would have that much effect on light at the speeds we’re talking about.
Besides the sun’s color on earth it’s not a shift of wavelengths, it’s a subtraction of wavelengths, as you easily can see in a spectrogram.
Do we experience Doppler shift with our own sun? I would assume as we are in a stable orbit we wouldnt
If the sun isn’t yellow, then how does Superman get his powers? Checkmate.
I have been fooled by the scientists, again. Thank you for opening my eyes.
Of course it is. If it wasn’t, everything outside would be tinted.
Well, you would be surprised how many people think it is yellow.
The sun actually gives out more green wavelengths iirc.
I think the point of the article is that the sun gives out all wavelengths and just because one is higher doesn’t change the fact that it emits all colours.
Mind sorta blown - such a great explanation.
Well, someday science is going to make new discoveries and prove this is all wrong. It’s like the coffee thing. Is it good for you or is it bad for you or…it’s just dirty water and we can all go about our lives. Personally, my magic cloud god tells me they put it there to give us light and warmth. And turns it off to save electricity. Which is a good habit if you ask me. Follow my imaginary Hebraic friend and save on your bills.
relevant video that came out today if you have half an hour and want to be confused
Why are the graphs for brightness as a function of wavelength and frequency not exact opposites? I thought that wavelength and frequency for light had an exact inverse relationship.
How about this, white isn’t a real color.
White is a color. It’s all the colors.
“Light is perceived by the human visual system as white when the incoming light to the eye stimulates all three types of color sensitive cone cells in the eye in roughly equal amounts.”
Which makes it a combination of color and not a distinct wavelength of light.
I mean… how do we know anything is real?
