Making Liquid Nitrogen From Scratch!

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  • Published on:  Friday, August 16, 2019
  • I used a nitrogen membrane and Stirling cryocooler to liquefy nitrogen out of the air. For this video I partnered with Starbucks to celebrate their Nitro Cold Brew. Order one here: https://starbucks.app.link/derekmuller

    Making liquid nitrogen is hard - in fact up until 150 years ago scientists doubted whether it was even possible to liquefy nitrogen. In 1823, At the royal institution in London, Michael Faraday first produced liquid chlorine, kind of accidentally by putting it under high pressure. He similarly liquefied ammonia.

    Borrowing a mixture from Thilorier in France, a combination of dry ice, snow and ether, he reached a temperature of -110C. By 1845 he used this mixture plus a hand pump to pressurize gases to liquefy all the known gases except six, which included oxygen and nitrogen. These became known as the “permanent” gases.

    A French Physicist Aimé compressed oxygen and nitrogen in tanks and then lowered them into the ocean over 1.6km deep, where the pressure got up to 200 atmospheres. Still the gases didn’t liquefy.

    Only at the end of 1877 were the first droplets of liquid oxygen and liquid nitrogen produced, by Cailletet in France. He first tried oxygen by compressing it up to 300 atmospheres, cooled to -30C, but that wasn't even enough to liquefy oxygen. But when he suddenly released the pressure, the expanding gas cooled, he estimated to -200C and he saw a mist and then droplets slide down the walls of his vessel.

    It's amazing how far we've come in that now I can purchase a helium-based cryocooler. It compresses and expands the gas to absorb heat from the tip of the cold finger and eject it into the surroundings at ambient temperature.
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  • Bo Kjerland
    Bo Kjerland  an hour ago

    cant believe he did not use aerogel to insulate the thermos

  • John Kean
    John Kean  5 hours ago

    Need liquid Nitrogen in a hurry - no chance

  • John Kean
    John Kean  5 hours ago

    I aint going to Allen's for tea or dinner he's expensive 🤔

  • John Kean
    John Kean  5 hours ago

    You're flat looks like mine when l have straightened it. 🤔 But u never lose anything do you?

  • Robert Lockard
    Robert Lockard  14 hours ago

    A compressor with a venturi nozzle can generate drips of liquid gasses (cheaper equipment but FAR less efficient on both power and time) you can then let evaporation remove the gasses that evaporate at lower temperatures.

    (That's kind of how they did it back in the 1920's according to my grandfathers chemistry textbook)

  • Robert Lockard
    Robert Lockard  14 hours ago

    A compressor with a venturi nozzle can generate drips of liquid gasses (cheaper equipment but FAR less efficient on both power and time) you
    can then let evaporation remove the gasses that evaporate at lower temperatures.

    (That's kind of how they did it back in the 1920's according to my grandfathers chemistry textbook)

  • Raj Rawariya
    Raj Rawariya  yesterday +1

    Make a video on spectroscopy of compounds

  • ScrotNimation
    ScrotNimation  yesterday

    Then why don’t we just use oxygen drink

  • Mr.
    Mr.  3 days ago

    (

  • ryan wagstaff
    ryan wagstaff  4 days ago

    Great work guys. Youve got a new subscriber

  • MrKylemail
    MrKylemail  5 days ago

    I bet his powerbill went way up

  • John Ward
    John Ward  7 days ago

    Him: This is coffee
    Literally everyone else: It's a pint of Guinness

  • Ceticismo.net
    Ceticismo.net  7 days ago

    King of Random really built a device to make liquid nitrogen from scratch
    Miss you, Grant

  • xvoidee
    xvoidee  7 days ago

    I don't like ads, but like Starbucks, so today I forgive you for this ad in the beginning. Thumbs up!!!

  • Cheneguein x
    Cheneguein x  7 days ago

    Now go to www.starbuckscoffee.com/veritasium to get a promo code: 15% discount on your next nitro coffee.

  • alkis papageorgiou
    alkis papageorgiou  7 days ago +1

    Damn u got a rly messy room

  • Lee Jia Wei
    Lee Jia Wei  14 days ago

    This video is so cool, Derek even has some icy spike beard xD

  • Will Pasieczny
    Will Pasieczny  14 days ago

    Guinness has been using nitrogen bubbles for decades. ;)

  • Beck
    Beck  14 days ago

    For some odd reason I want to liquify farts now...

  • Poker Face
    Poker Face  14 days ago

    Just how is this making liquid nitrogen from scratch?