jump to last post 1-3 of 3 discussions (4 posts)

Is there an "absolute hot"?

  1. stanwshura profile image73
    stanwshuraposted 5 years ago

    Is there an "absolute hot"?

    Since there is an absolute zero, the coldest cold that has, does or ever could or will exist in the entire cosmos, spacially AND temporally (that theoretical limit, at least for thermal and kinetic energy - quantum mechanics and the definition and measure of POTENTIAL energy are shelves worth of complicated, and a different physics altogether - where there is NO MOTION/ACTIVITY and we're talking at down to the atomic/molecular level, is 0deg Kelvin (K), -273.15 C, and -459.67 F), is there a possible limit to how hot a temperature can be reached or amount of motion/energy measurable, thermally?

  2. Caleb DRC profile image80
    Caleb DRCposted 5 years ago

    My guess would be the Planck temperature, which is 1.416785 X 10^32 Kelvin. This is about 2.55 X 10^32 degrees F.  If it can go higher than that, our laws of physics can not describe it.

    1. stanwshura profile image73
      stanwshuraposted 5 years agoin reply to this

      Wow - thank you for this detail!  You definitely gave me plenty of Googlable material.

  3. SidKemp profile image94
    SidKempposted 5 years ago

    In quantum physics, yes, the Planck temperature is "absolute hot." It's not that things can't get hotter, it's just that we'd have no idea what would happen if they did.

    Conditions before the Big Bang might be described as "above absolute hot."

    In classical physics, there is no absolute hot.

    In practical terms, if we could take all the energy of the universe and heat up just one particle, then all the energy of the universe would be in that particle. Everything else would be at absolute zero, and it would be as hot as anything could ever get.