Naked Science Forum

Non Life Sciences => Chemistry => Topic started by: kullboys on 10/10/2018 05:50:07

Title: What material could be used to pass UVB from direct Sun rays to make Vitamin D?
Post by: kullboys on 10/10/2018 05:50:07

Hello everyone
Kullboys is wondering:

What material could be used to pass UVB from direct Sun rays to make Vitamin D?
Thanks.

Title: Re: What material could be used to pass UVB from direct Sun rays to make Vitamin D?
Post by: evan_au on 10/10/2018 10:11:35

A bit of Sun exposure each day on your skin works fine - perhaps 10 minutes/day for fair-skinned people, more for dark-skinned people.

If you are talking about someone who can't get outside at all, due to disability or fears, getting 10 minutes through an open window would be nearly as good.

A closed glass window or skylight would probably absorb a lot of UV, so you would need to take some measurements to estimate the right amount of exposure.

Title: Re: What material could be used to pass UVB from direct Sun rays to make Vitamin D?
Post by: Colin2B on 10/10/2018 15:02:19

Quote from: evan_au on 10/10/2018 10:11:35

A bit of Sun exposure each day on your skin works fine

Maybe this is the material the Op is looking for.
Clone some skin. It would need nourishment and the D tapping off, which might be too hard compared to other production processes.

Title: Re: What material could be used to pass UVB from direct Sun rays to make Vitamin D?
Post by: chiralSPO on 10/10/2018 15:11:10

Kullboys, can you clarify your question further--I'm not sure exactly what you're asking...

Do you want a material that blocks harmful rays, but allows enough UVB for natural vitamin D biosynthesis?

Or are you asking what precursor of vitamin D is converted into vitamin D by the action of light?

Or are you asking about what materials (environment) is required for this transformation to work?

Or have I missed your meaning entirely?