2,852 views 3 years ago
    We make some liquid nitrogen with a cryocooler and supercool it down to almost solid (slushy) through evaporative cooling.

    The temperature of something is really the average kinetic energy of all the molecules in a given system (thing). So that means some of molecules (or atoms) are above the average temperature and some are below. By lowering the pressure with a vacuum the hottest molecules are released from the liquid as gas, leaving behind a slightly cooler liquid.That's why water can evaporate despite being far below it's boiling point, the hottest molecules can sometimes gain enough momentum from the collisions with other molecules to have enough energy to leave the liquid as a gas, taking away a little bit of heat energy with it. Show less
    Read more
  • Radiation, Chemicals and Jet Engines Play all

    This item has been hidden
  • Uploads Play all

    This item has been hidden
to add this to Watch Later

Add to

Loading playlists...