1 HN user recommended this tutorial1 month2023–2025score 1
Years with an HN recommendation, 2007–2026
HN points to it in threads on radiative cooling as a hands-on explanation of passive daytime cooling.
Tech Ingredients shows how to build a liquid panel with a specialty paint that, placed outside, cools below ambient air temperature. It demonstrates radiative sky cooling.
“there are a couple good videos about it from NightHawkInLight” (HN, 2025)
It's a thing in from thousands of years ago [link] and today [link] for PDRC there are a couple good videos about it from NightHawkInLight [link] , [link] and Tech Ingredients [this video] [link]
There is a detailed example of this uploaded a few months ago here [this video] [In fact, I just noticed the author of the OP video posted on this one]
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