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Ethics and Morality What's right and what's wrong? Discuss issues on ethics, morality, and justice.

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  #16  
Old 07-27-2010, 08:21 PM
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The sun is not a blackbody, so although the temperature for a blackbody would give you green, the sun is more yellow at peak. Suprisingly difficult to find anything definitive on this.

Although we can broadly say that sunlight is white, it'd be a bit of a suprise if it actually were pure white light - wouldn't it?

Obviously there can also be a discussion on ACTUAL colour, versus captured colour - the human eye is most sensitive to (suprise) green/yellow light.

BTW - the human eye can distinguish about 1 million hues. My monitor can display rather mor ethan that. What's the fuggin point?
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  #17  
Old 07-28-2010, 02:31 AM
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The sun is indeed not a black body, but due to the fact that the sun would emit a much larger amount of light than it reflected, I had assumed it safe to vulgarly consider it the same as a black body. So then the radiation coming from the rest of the universe is luminescent enough to change the emitted peak that much? Interesting.
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Old 07-28-2010, 10:03 AM
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I dunno - like I say it's difficult to get definitive data on this for some reason.

BUT - remember the sun isn't simply an object that has been heated up to a given temperature and is now radiating. It's pouring out radiation through an atmosphere, so there's absorption at the surface. And, it's not black. Carbon nanotubes are the best approx to blackbodies (that we have) and that's about 99% emissivity. A blackhole is black, but it's fairly cold....
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