ben_w 14 hours ago

Density (and wavelength), rather than total power, is important.

Sun's 1kW/m^2, and even then you shouldn't look directly at it, and being out in it all day without protection leads to sunburn.

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nkrisc 12 hours ago

It’s not, for an extended period of time. Now imagine it was collimated rather than diffuse.

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  • kurble 12 hours ago

    That's the thing, sunlight is collimated. It only gets diffuse once it reflects of a diffuse surface.

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    • nkrisc 11 hours ago

      Fair enough, poor choice of words on my part. What I meant was concentrated further (in terms of energy per area) than the typical concentration received at the surface of the Earth.

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_Algernon_ 18 hours ago

Last time I forgot sunscreen at a UV index of 10 my skin started peeling of after half an hour so...

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