That Ultra-White Paint That Helps Cool Surfaces? Make your Own! - It started with [KB9ENS] looking into paints or coatings for passive or radiative ... - https://hackaday.com/2023/07/22/that-ultra-white-paint-that-helps-cool-surfaces-make-your-own/ #radiativecooling #chemistryhacks #passivecooling #bariumsulfate #acrylicpaint #science #ambient #paint

@W9SSN right… why not. So anecdotally… with the battery in direct Sun in a situation, where, previously it would’ve been too hot to touch, was merely warm. I haven’t had a chance yet to take the radio out but I will do soon. #passivecooling #bariumsulfate