making opals for free air conditioning

Check out my sponsor Brilliant, free for 30 days (and get 20% off a premium subscription!) by using this link: In this video we explore the creation of synthetic opal in the workshop with the end goal of improving our homemade radiative sky cooling coatings. The Thought Emporium's video about making opal: The paper referenced throughout this video (this link will download a pdf): Thank you so much to those of you who support this channel on Patreon! Your support helps give me confidence to spend my time researching projects that are of value for more than just video views. A special thank you to my top patrons: Aik193, Chris, Damián Arrillaga, Daniel Moore, Dustin B , Eugene Pakhomov, Evan Hughes, Evan Relf, Gusbear, Jedediah Kivi, Jonathan Wilt, Iain Rei, Josh Hoppes, Mark Roth, Matthew, Matthias S., Michel Pastor, Nick Gerner, PabloXIII, Parker Jones, Peter Gordon, PeteyPak, Sam Hodge, Santiago Perez, Simone Chiesi, Syniurge, Teague Lasser, WilSkarlet, Yanko Yankulov, Alvaro Figueroa Thank you for watching!