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Say I am sitting in the shadow, but the sunlight gets reflected by some window pane onto me. Does this contain enough UV light to give me a sunburn?

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[–] [email protected] 5 points 6 months ago

Yes. You burn more easily near the water due to reflected light.

[–] [email protected] 11 points 6 months ago* (last edited 6 months ago)

According to this Stack Exchange answer, glass reflects around 4-100% of the UV in sunlight depending on the angle of incidence. So you could probably get a sunburn if the angle is low enough (like if the Sun is almost directly overhead and reflecting off a vertical window).

[–] [email protected] 15 points 6 months ago (1 children)
[–] [email protected] 1 points 6 months ago

Let's assume the reflection is coming from just one flat glass pane.

[–] [email protected] 8 points 6 months ago

It really depends on the type of glass some glass transmits UV light and some types reflect UV light. And that is not taking into account the pile of other factors that will affect it.

[–] [email protected] 29 points 6 months ago (1 children)

You can get a burn from a reflection. There’s a building in Las Vegas that caused this problem due to its windows and angle towards the sun.

There are too many variables to say if you’ll get a burn though.

[–] [email protected] 11 points 6 months ago

Such as how much light is reflected, whether any windows have UV coating, how much exposure you get, and how susceptible you are to burning.

But it's possible.