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Author Topic: What colour clothing reflect UV best and why?  (Read 7439 times)

Offline iva

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What colour clothing reflect UV best and why?
« on: 26/02/2010 05:39:19 »
I have read a recent article stating that red and blue clothing protect the skin best against UV. Why is this so when white has always been the popular choice? Also I would imagine composition of the clothes would make a difference too then and not just their colour?

 


 

Offline Bored chemist

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What colour clothing reflect UV best and why?
« Reply #1 on: 26/02/2010 06:55:35 »
There's no real way to tell from the colour if something blocks UV. Having said that it's hard to see how you could make a dye that was black but didn't absorb UV well. The design of the clothing is a big factor too.
 

Offline LeeE

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What colour clothing reflect UV best and why?
« Reply #2 on: 26/02/2010 11:50:31 »
Red and blue doesn't make sense to me.  Red is long wavelength visible light and blue is short wavelength visible light, so red and blue are at opposite ends of the visible spectrum.  However, both red and blue light are longer than UV, which is shorter than either.
 

Offline BenV

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What colour clothing reflect UV best and why?
« Reply #3 on: 26/02/2010 14:42:21 »
I would think that white clothes would be better, as they often include optical brighteners which interact with UV to give out blue light, and make your clothes "whiter than white"TM.
 

Offline flr

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What colour clothing reflect UV best and why?
« Reply #4 on: 27/02/2010 23:41:14 »
even the glass is opaque for UV.
 

Offline LeeE

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What colour clothing reflect UV best and why?
« Reply #5 on: 28/02/2010 12:20:22 »
'Ordinary' glass is partially transparent to Near ultraviolet (UVA).
 

Offline Bored chemist

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What colour clothing reflect UV best and why?
« Reply #6 on: 28/02/2010 17:07:45 »
You need to remember that cloth is just a lot of holes woven together. The holes have no UV protection so the fabric will never be brilliant as a sun block.
 

Offline LeeE

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What colour clothing reflect UV best and why?
« Reply #7 on: 28/02/2010 23:36:13 »
...is just a lot of holes woven together...

You make it sound like semiconductors ;D
 

Offline efovargue

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What colour clothing reflect UV best and why?
« Reply #8 on: 01/03/2010 10:24:49 »
I thought that black absorbed UV light - thousands of old women in Greece can't be wrong!



Mod edit - no spammy links please.
« Last Edit: 01/03/2010 11:38:55 by BenV »
 

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What colour clothing reflect UV best and why?
« Reply #8 on: 01/03/2010 10:24:49 »

 

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