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TeMPOraLtoday at 5:44 AM2 repliesview on HN

> The reason for this is that the sun is at a low angle, so it hits more of your body than it does when the sun is overhead - like you'd get in Australia. This also means that while you need some sunscreen during the day - from about 10 to 5 - it doesn't burn as much.

Not sure if I parse this correctly - I'd imagine you need more sunscreen at "low angles" due to more severe and longer exposure? Low angle -> more body surface area exposed directly at near-right angle to Sun -> more direct absorption -> more sunscreen needed?


Replies

lukantoday at 8:32 AM

No, because the sun at low angles passes so much atmosphere, that filters most out.

The exposure angle of your body also has a effect, but much weaker.

Dansvidaniatoday at 6:07 AM

at lower angles the sun light needs to go through a much bigger "cross section" of atmosphere which greatly reduces its energy.

This is why noon sun is the most dangerous.

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