- absorption and radiation are correlated (a black surface would radiate more th... | Hacker News

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mjan22640 on July 5, 2023 | parent | context | favorite | on: Making infrared cooling paint from grocery store i...

- absorption and radiation are correlated (a black surface would radiate more than a white surface when heated to 6000K (assuming they survive the temperature unchanged)) - a solid polished surface reflects better than a powder surface (thats imho a flaw in the article) - basically you want a surface that is white in solar and black in atmospheric

culopatin on July 5, 2023 | [–]

One of my high school professors touched on this when talking about heatsink design and I thought I remembered it wrong, glad to see it come up here.

trilbyglens on July 5, 2023 | [–]

Exactly. The trick here is that you're exploiting overlaps in emission and absorption spectra in the atmosphere.

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