Water freezing in a vacuum
Why Worldbuilding Stack Exchange recommends it
Worldbuilding Stack Exchange answerers and commenters link it as a concrete visual of what water does in a vacuum, including flash freezing and evaporative cooling.
Recommended by 1 people across 1 different months, 2019 to 2020.
What it is
A short real-time demonstration of water placed in a vacuum chamber, where it boils and then abruptly freezes solid near the 3 minute mark. The uploader says nothing is sped up and that the instant freeze was unexpected.
What people said
Recommends Starfish Prime · 2019-05 · Worldbuilding Stack Exchange · on “Does water in vacuum form a solid shell or freeze solid?”
Aha, relevant answer on the physics site: [LINK] and also a nifty video: [this video] flash freezes unexpectedly at 3 minutes!
Cites conman · 2019-02 · Worldbuilding Stack Exchange · on “Effects of Explosive Decompression on the Human Body?”
We actually have first-person testimony about what happens under these circumstances. In 1966 Jim LeBlanc was testing a space suit in a vacuum chamber when his supply line came detached and let his atmosphere out very quickly. This clip: [LINK] Includes some original footage as well as interviews with people involved. Jim lost consciousness very quickly - measured in seconds. The last thing he remembers was feeling the saliva on his tongue boiling. They were able to quickly re-pressurize the chamber and he regained consciousness shortly, without any permanent damage. Passing out quickly is likely an unavoidable consequence. This is very similar to what happens with inert gas asphyxiation [LI
Cites André L F S Bacci · 2020-06 · Worldbuilding Stack Exchange · on “How to cool a room without a place to dump the heat”
You don't dumps "heat" to outside. You extract "cold" from inside. A very small vacuum pump could freeze water very fast [this video] . A lot of water [LINK] , if you like. Simply run a fan in front a reservoir of water with a vacuum pump attached to it, and voalá. "Cold from tap" is a registered mark from Very Rich People , patent pending. Taxes will apply.