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andrewta@lemmy.world to Asklemmy@lemmy.ml · 1 year ago

Why does the aurora borealis appear to be white in the sky but in pictures it has nice coloration?

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Why does the aurora borealis appear to be white in the sky but in pictures it has nice coloration?

andrewta@lemmy.world to Asklemmy@lemmy.ml · 1 year ago
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  • VisualBuilder4@lemmy.world
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    1 year ago

    My quick guess is that it is so dim, that our eyes are seeing it mostly with the rods (instead of the cones), which only see black and white. „In the night all cats are gray“

    • all-knight-party@kbin.run
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      1 year ago

      Wait… Did you really just use the Benjamin Franklin grandma pussy quote for this?

      • VisualBuilder4@lemmy.world
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        1 year ago

        Oh. I didn’t know this was a thing. In my mother tongue (German) it is like a normal expression.

        • tetris11@lemmy.ml
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          1 year ago

          Nachts sind alle Katzen grau

          https://de.wikipedia.org/wiki/Nachts_sind_alle_Katzen_grau

          Apparently it was originally adapted from Don Quixote

        • all-knight-party@kbin.run
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          1 year ago

          I’m sure it is, it’s just because my first experience with it was through that letter, so now it’s ruined for me.

      • Trashboat@lemmy.blahaj.zone
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        1 year ago

        Excuse me the what now

        • all-knight-party@kbin.run
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          1 year ago

          https://en.wikipedia.org/wiki/Advice_to_a_Friend_on_Choosing_a_Mistress?wprov=sfla1

          Learn and be scarred

          • ianovic69@feddit.uk
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            9 months ago

            deleted by creator

          • sfbing@lemmy.world
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            1 year ago

            From reading the text, I speculate that Franklin was alluding to the preexisting saying as well – alluding to the cat in the dark as an accepted axiom.

            • all-knight-party@kbin.run
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              1 year ago

              That would make sense, cleverly recontextualizing a regular saying. It would fit the tone of the letter to do that humorously

    • insomniac_lemon@kbin.social
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      1 year ago

      I think a better example probably would just be the night sky (at least in places with non-optimal conditions). Where I’m at there is very little color even when it’s clear enough to see galactic features (interstellar cloud/nebulae, clusters of dimmer stars etc).

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