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this post was submitted on 13 Jun 2024
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Tradeoff is dark colors absorb more UV so it provides better protection from the sun
Umm…
~~Reflection is just as effective as absorption. As long as the UV isn’t passing through the fabric into you, you are fine.~~
Well butter my biscuit, I might be wrong. There are other of factors to take into account, but it makes sense that, the portion of light that does make it through a light fabric will keep on reflecting inside the garment until it is absorbed or escapes back out. Like a photography light box.
Skincancer.org is my source for darker colors being better protection
https://www.skincancer.org/blog/dress-to-protect-5-things-that-affect-how-well-your-clothes-block-uv-rays/
I don't have the highest degree of confidence in it but it makes sense to me that absorption matters more than reflection because a lot of the reflected UV will be going through the shirt and onto your skin
That's why materials like linen aren't as good for UV protection. They're light weaves and let a lot of light through, still
Look at the sun through a white shirt, then black. Which is brighter?
The white would be as it would absorb (then converted to heat) less light and would reflect it instead.
Thebottom half is highlighting the absorption by showing radiance (giving off it's own/stored energy), not reflection.
Gotta get that UV colored tshirt :-)
FYI there are UV absorbant tshirts, crazily practic for kids.