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by wickedwillie on August 8th, 2004

wickedwillie

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Can you get a tan when sitting in the sun behind a normal glass window?

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  • by katscratcedme on August 9th, 2004

    katscratcedme

    Oh yes.

    You can get a tan behind glass and you can also get sunburned. A greenhouse is a good example of this, where plants can be sheltered from wind, cold, frost/precipitation etc while still receiving the benefits of photosynthesis.

    Glass has to be specially treated to exclude IR and UV rays, as in glass lens sunglasses the likes of Rayban and Vuarnet.

    Interestingly, a cheaper polycarbonate lens has far superior inherent qualities in reducing IR and UV penetration than glass. Elite lens manufacturers persisted in the use of more expensive glass (plus its additional treatments) to maintain optical precision, though modern science has dramatically improved the optics in plastic-based lenses so they are virtually on par with glass, plus much lighter and not prone to shattering.

    Some domestic glass can be ordered with UV and IR resisting properties, and many auto manufacturers also treat their glass likewise as standard.

    If you really have to ask why you can get a tan behind glass, it's because exposure to sunlight gives you a suntan.

    If you want to prevent yourself from tanning/burning behind glass:

    1) Wear a sunscreen, perferably SPF 30+

    OR

    2) Get out of the sun.

    Comments

    • This artical does not explain why you can get a tan behind glass. It also does not explain what will prevent you from gettin

      Threedogs

      by Threedogs on August 10th, 2004

    • The fact that sunglasses advertise UV protection is strong evidence for this argument. Question did not ask why. Good answer.

      Thom64

      by Thom64 on August 10th, 2004

    • The exact question was indeed answered and required no further explanation. It's a good answer.

      Andy Is Wicked Married to Penal Colony

      by Andy Is Wicked Married to Penal Colony on August 11th, 2004

    • Great answer to the Q & really covered alot. Threedogs has different Q's entirely which he needs to submit.

      Thommy

      by Thommy on August 11th, 2004

    • This explains the phenomenon known as "truckers tan" where your left arm is tan and your right isn't

      JollyMommy

      by JollyMommy on August 25th, 2004

    • This is a fine answer. Screw Threedogs. :)

      Relsqui

      by Relsqui on June 5th, 2005

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