| ▲ | yownie 8 hours ago | |
radiative sky paint https://hackaday.com/2023/07/03/cooling-paint-you-can-actual... | ||
| ▲ | netsharc 7 hours ago | parent [-] | |
Using CaCO3 which is calcium carbonate, like the article. This science-lecturer-esque guy is using Barium Sulfate: https://www.youtube.com/watch?v=dNs_kNilSjk | ||