I exist or something probably

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Cake day: June 8th, 2023

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  • Yes, all of that is obviously true between shirts, the question is about shirt color, which is almost entirely down to the pigments used in fabrication. In which case it is entirely due to the absorptivity, emissivity, reflectance, and opacity, of the pigment.

    This isn’t an active area of debate, it’s an entirely empirical question or a hard modeling problem per shirt manufacturer. All of this is very solved science, and has become “an engineering problem”




  • If they have identical or close enough emissivity it is directly proportional to heat absorption, as given identical amounts of time in the sun and air flow, temperature will almost entirely depend in absorptivity, and emitted infrared is proportional to temperature^4.

    Black bodies emit and absorb perfectly. These probably all have an emissivity that’s lower than a blackbody, and very close together, while absorptivity is related to the color of the shirt. So this test is actually fairly indicative.