I think that’s saying that if you go out at sunrise/sunset, the sun is on the horizon, and so your shadow will be a lot longer. In that scenario, you aren’t getting enough UV to produce the vitamin D you need.
I think that’s saying that if you go out at sunrise/sunset, the sun is on the horizon, and so your shadow will be a lot longer. In that scenario, you aren’t getting enough UV to produce the vitamin D you need.
Psych@lemmy.sdf.org 3 weeks ago
Still I don’t understand does shadows have something to do with vitamin D ?
Trail@lemmy.world 3 weeks ago
No. It means how high is the sun.
Trail@lemmy.world 3 weeks ago
With booze and mushrooms and so.
Psych@lemmy.sdf.org 3 weeks ago
And maybe a little weed, I heard sun Doesn’t even need a lighter to light it so must be a pro at that .
userflairoptional@lemmynsfw.com 3 weeks ago
A shallow angle from the sun give you that long shadow, but it also gives the light lots of extra air to pass through sideways on it’s way down out of space. The extra air filters out more light, and without an intense enough light your skin won’t make Vitamin D.
Fermion@feddit.nl 3 weeks ago
If you have a long shadow, the sunlight that gets to you has gone through much more atmosphere which attenuates the ultraviolet light. So at high/low lattitudes and during morning/evening hours the amount of uv that gets to the surface is much lower.