- Grays Harbor County takes its name from the broad, shallow bay that drains five rivers in southwest Washington. The dense forests of spruce, hemlock, cedar, and Douglas fir attracted loggers and mill operators and at the turn of the twentieth century, communities such as Aberdeen, Hoquiam, Cosmopolis, and Montesano flourished. Immigrant wage earners flooded in to harvest green gold. One hundred years later, the county struggled to reinvent itself without logging, milling, and fishing. The Native Americans who were shoved aside by the settlers reemerged with self-government and new enterprises.
- 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.