I’d think the answer is yes due to the lack of that type of radiation, but I haven’t noticed a significant difference in my experience.

(I did google, but I couldn’t find any answers to this)

  • marcos@lemmy.world
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    6 hours ago

    You should look for semi-reflective or tinted glass if you want it to not let warmth pass in to your home. (And if you have double glasses, only the external one should be treated.)

    The UV-blocking glasses will warm you less, but as you noticed, not enough to make a sensible difference. They add absorption of a very small band of light that isn’t the most intense on Sun-light and is also absorbed by the atmosphere.

    • cecilkorik@lemmy.ca
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      4 hours ago

      That’s false. You can literally not only feel heat from, but you can in fact set things on fire with, a completely monochromatic green laser with a wavelength exactly in the middle of the visible spectrum. No infrared, no ultraviolet. Lots of heat transfer. You could do it with an ultraviolet laser too if you were careful enough and could get around ultraviolet’s tendency to destroy molecular bonds completely before they even have a chance to burn chemically. It’s not just lasers either, any light source is going to deposit energy in the form of heat on anything that light touches. Any light contains a large amount of energy and some of it will get absorbed by anything it interacts with, and that’s still true whether it’s infrared, ultraviolet, somewhere in between, or all the above.

      Infrared has a special relationship with heat, yes, because of the distribution of blackbody radiation, but “No” is absolutely the wrong answer here. The right answer is “Yes, but… it’s complicated”.

    • teft@lemmy.world
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      7 hours ago

      This is correct but also glass blocks both ends of the spectrum. Really just visible light goes through glass. You get some near IR passthrough but not much.

      • AbouBenAdhem@lemmy.world
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        7 hours ago

        There’s glass that doesn’t block UV frequencies—like the glass used in tanning booths, UV lights, and UV cameras.

    • AbouBenAdhem@lemmy.world
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      7 hours ago

      Infrared is the frequency emitted by warm objects—that doesn’t mean it’s the only frequency that makes objects warm.

  • AbouBenAdhem@lemmy.world
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    7 hours ago

    I would think it would depend on whether the material the light hits inside the window reflects UV light, or absorbs it and re-emits it as heat.