4 ms·
It's remarkable how much attention is given to the quantity of the desirable Sun exposure, and how little thought is spent on the quality of the light. Absent
by DenisM 8y ago
It's remarkable how much attention is given to the quantity of the desirable Sun exposure, and how little thought is spent on the quality of the light.
Absent sunscreen the UV-heavy mid-day Sun in the tropics gives me a sunburn in 15 minutes, while a morning exposure at the same locale remains perfectly safe for all the three hours that the morning lasts. The turning point is when the Sun crosses 45% boundary (when a match stuck in the sand becomes taller than its shadow), so my schedule is beach-time 6-9am and 3-6pm, while the rest of the time is spent sleeping, eating, working, and sightseeing.
I wish I could sell you some dietary supplement with this fantastic advice, but none is needed. Well, maybe a branded box of matches is in order?..
- drited 8y agoInteresting stuff. What country is this? What skin complexion?
- DenisM 8y agoTypical caucasian skin - not pale, not dark. The places were Hawaii and Costa Rica, but it should work the same anywhere in the tropics - just make use of the match-sand trick to adjust for the local timezone.
- argonaut 8y agoBut the amount of vitamin D synthesized is proportional to the amount of UV radiation received.
- wyclif 8y agoI can attest to this because right now I'm about 13 degrees above the equator, in the Philippines. On top of that, I'm Anglo and my ancestors are uniformly from the region now known as the United Kingdom, so my complexion is quite fair. The midday sun is very bright and harsh here in SE Asia. I stay out in the middle of the day as much as possible, but get a lot of sunlight in the early morning and late in the afternoon.