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moosetwin ( moosetwin@lemmy.dbzer0.com )  to Science Memes@mander.xyzEnglish · 3 years ago

I've noticed that people make the 'surface of the sun' temperature comparison a lot

lemmy.dbzer0.com

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I've noticed that people make the 'surface of the sun' temperature comparison a lot

lemmy.dbzer0.com

moosetwin ( moosetwin@lemmy.dbzer0.com )  to Science Memes@mander.xyzEnglish · 3 years ago
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  • Cloudless ☼ ( cloudless@feddit.uk ) 
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    3 years ago

    1000032866

    By the way, in 2012, scientists on the LHC were able to create the highest man-made temperature, at an astounding 5 trillion K – the temperature of the universe moments after the big bang.

    • RiverGhost ( aeki@slrpnk.net ) 
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      3 years ago

      We should at least have referred to the corona instead of the surface.

      When it comes to the opposite, the coldest temperature in the known universe has actually been man-made (also in lab settings).

    • skillissuer ( skillissuer@discuss.tchncs.de ) 
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      3 years ago

      5500C? i thought it’s not that much, chemistry can get you there

      apparently not

      thermite tops at some 2000C-something, and in any case can’t work above boiling point of aluminum (2470C)

      only in few cases of adiabatic flame temperatures reach above 4000C, and all in oxygen. highest listed in wikipedia is oxygen/dicyanoacetylene at 4990C. maybe some wacky highly fluorinated oxidizer will allow for even higher temperatures. adiabatic detonation temperatures also top out at some 4500C even for the most energetic explosives

      so really only practical way to get to 5500C is through use of electric arc

      • kbal ( kbal@kbin.melroy.org ) 
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        3 years ago

        adiabatic detonation temperatures also top out at some 4500C even for the most energetic explosives

        What if we pre-heat the room to 3000, then very quickly introduce the explosives and run away before detonation?

        • skillissuer ( skillissuer@discuss.tchncs.de ) 
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          3 years ago

          if there’s no room left after measurement, did it really happen?

      • HeckGazer ( HeckGazer@programming.dev ) 
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        3 years ago

        Surely a laser would be way more practical

        • skillissuer ( skillissuer@discuss.tchncs.de ) 
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          3 years ago

          depends on what do you want to heat up. hint: at 5500C you need to handle plasma anyway

      • wahming ( wahming@monyet.cc ) 
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        3 years ago

        You’re only off by about 9 zeros.

    • Rodeo ( Rodeo@lemmy.ca ) 
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      3 years ago

      How do we know what the layers of the sun and earth are, and how hot they are? What methods were used to gain (or theorize) this information?

      • Umbrias ( Umbrias@beehaw.org ) 
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        3 years ago

        Loss and lots of science and math to model and simulate the sun in a variety of ways slowly weeding out the models that weren’t making experimentally validated predictions. I’m not sure how many astronomers are around, especially sun focused ones, on Lemmy to answer you more specifically about the history of sun science.

  • Rudee ( Rudee@lemmy.ml ) 
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    3 years ago

    tbf, by earthly standards the surface of the sun is insanely hot

  • uis ( uis@lemm.ee ) 
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    3 years ago

    Can’t use metric

  • 🇰 🌀 🇱 🇦 🇳 🇦 🇰 🇮 🏆 ( Kolanaki@yiffit.net ) 
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    3 years ago

    I’m partial to “hotter than the devil’s nutsack” personally.

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