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How to make liquid nitrogen

  1. Apr 19, 2015 #1
    Hi Everyone
    liquid nitrogen is very useful .

    i want to know how to make liquid nitrogen?
    i wont make a one. but i only want to know how to make it .
     
  2. jcsd
  3. Apr 19, 2015 #2

    Borek

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    Staff: Mentor

    Have you asked uncle Google?
     
  4. Apr 19, 2015 #3

    DrClaude

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    That's easy. Just take solid nitrogen and let it melt :wink:
     
  5. Apr 19, 2015 #4
    yes:biggrin:
     
  6. Apr 23, 2015 #5
  7. Apr 25, 2015 #6

    DrDu

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    Science Advisor

  8. Apr 25, 2015 #7
    that is a useful website:wideeyed::rolleyes:.
    thanks for help.
    but there is only one problemo_O?
    I do not understand German:smile:.
    but it is not a big problem i can use google translate:wink:
    :biggrin:
     
  9. Apr 26, 2015 #8

    jtbell

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  10. Apr 26, 2015 #9
  11. Apr 26, 2015 #10
    Dang!
    Looks like the amazing DrDu
    Pulled out another gem from his zoo
    Of websites that remind me of a cuckoo
    And teach you how to do science kung fu..............
     
  12. Apr 26, 2015 #11
    Seriously though.............how did you run into that site, if I may ask ?
    I've been searching about these things for some time now, I've never seen an amateur build something like a GM cryo-cooler, and pulsetube refrigerator. That guy's got something to be proud of. I've seen siemens cycle, Hampson-Linde cycle and stirling coolers, but nothing beyond that. I could give you links to just about all sorts of attempts on youtube, blogspots, personal websites, forums........and yet never saw a hint or reference to that german site. It's like Batman says "not so much as a green hair" about finding the joker..................
    Do you have anything else "exquisite" up your sleeve?
     
    Last edited: Apr 26, 2015
  13. Apr 26, 2015 #12

    DrDu

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    I don't know. Maybe it helps being German? :-)
     
  14. Apr 26, 2015 #13
    What about the other question? Do you know of something else interesting related to the topic? Maybe you know of an attempt to liquefy helium ?
     
    Last edited: Apr 26, 2015
  15. May 27, 2015 #14
    There are two ways to do this.
    1. Pour the alcohol into a plastic container and nest this container inside a bucket of dry ice.
    2. Alternatively, you can pour the alcohol directly over the dry ice. This is easier, but you won't have control over the temperature of the dry ice, so it's possible your alcohol will freeze.
     
  16. May 27, 2015 #15
    This is a common misconception. What you described is called poor man's liquid nitrogen, not actual liquid nitrogen.
    And you would be well advised not to try demonstrations of Leidenfrost effect with that, since you'll end up losing whatever body part you tried it on.
    [p.s. I really don't know who coined that term, it's hardly appropriate anyway.
    Poor man's liquid nitrogen has little in common with actual liquid nitrogen, besides freezing flowers :)]
     
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