Yeah where is his photo - eviltoast
        • Buddahriffic@lemmy.world
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          11 months ago

          It would be close but but exactly the same. A vacuum would refract the light going through it differently than a bubble of gas. Though I think it would need to be pretty big to see it with the naked eye.

      • Kühe sind toll@feddit.de
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        11 months ago

        You see the a bubble of gas(and therefore the absence of water), not the oxygen itself. You could use only nitrogen gas and you couldn’t tell the difference.

    • Buddahriffic@lemmy.world
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      11 months ago

      There won’t be that much CO2 for a long time, even if we increase our carbon output. Currently it stands at around 0.04%, third to argon at a bit under 1%. Oxygen is just under 21%. Oxygen and nitrogen together make up over 99% of the atmosphere (at sea level). That’s for dry air, otherwise water vapour is at around 1% and the others reduced to fit that in.