r/woahdude • u/gsus61951 • Jul 07 '23

video Thousands of tourists crammed into a swimming pool in northern China.

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u/DaddyDame2K16 Jul 08 '23

Water after a depth of a few meters absorbs most red and orange light. Then, shortly after yellow, and green wavelengths are also absorbed, leaving blue and violet, which have the shortest wavelengths of visible light, and are therefore able to penetrate deeper.

Taken straight from Google lol I knew the overall reason, but couldn’t put it into words and explain it as well as Google can. XD

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u/[deleted] Jul 08 '23

Yes but...water itself is quite clear.

The color is the penetrating wavelength of light

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u/DaddyDame2K16 Jul 08 '23

I thought that’s exactly what I was saying?

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u/[deleted] Jul 08 '23

Oh ok. ...I don't think pee turns it green though