Homemade liquid nitrogen generator using Joule Thomson Throttling (homemadeliquidnitrogen.com)I determined that there was no good tutorial on how the average person can liquefy nitrogen or air. A few references to cryocoolers, which use an internal helium Stirling engine to create a cold head exist, and I even saw one person use this as a means to liquefy nitrogen, allowing the gas to condenses as it passes over the head. This method is cheating because it relies on a self-contained refrigeration unit. I wanted to do this using regenerative cooling just like Carl Linde back in 1895.
related
Lewis Carroll (Wikipedia)Charles Lutwidge Dodgson (/ˈlʌtwɪdʒ ˈdɒdʒsən/ LUT-wij DOJ-sən; 27 January 1832 – 14 January 1898), better known by his pen name Lewis Carroll, was an English author, poet, mathematician and photographer. His most notable works are Alice’s Adventures in Wonderland (1865) and its sequel Through the Looking-Glass (1871). He was noted for his facility with word play, logic, and fantasy. His poems Jabberwocky (1871) and The Hunting of the Snark (1876) are classified in the genre of literary nonsense.