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Another big challenge in winter months is that people are so covered with warm clothes, that even going out in Sun doesn't help much.
by timewarrior 9y ago
Another big challenge in winter months is that people are so covered with warm clothes, that even going out in Sun doesn't help much.
- pkaye 9y agoI wonder if glass windows would block out the benefits?
- mjevans 9y agoAnecdotally, a lot of window products have built in films, coatings, or dopants that reduce UV exposure and possibly other portions of the spectrum. I would /guess/ that pure (greenhouse?) glass, maybe not even visibly transparent, would be effective. Both could be worth studying if someone hasn't already.
- AstralStorm 9y agoGlass itself blocks a lot of UV. Even not doped. There exist optically transparent plastics that do not.
- gmaillogin 9y agoIt helps prevent ultraviolet rays from sunlight.https://www.hotmailsigninguide.com https://www.hotmailsigninguide.com
- rollulus 9y agoYes it does block [1]. Coincidentally I was discussing this with a co-worker last week. [1]: http://www.sciencefocus.com/qa/can-you-absorb-vitamin-d-through-window http://www.sciencefocus.com/qa/can-you-absorb-vitamin-d-thro...
- Gibbon1 9y agoOrdinary window glass blocks 90% of UV-B which is needed to produce VitD. I do remember reading years ago about a sanitarium in the late 1800's - early 1900 where the windows in the sun rooms were quartz glass.