| ▲ | robotresearcher 2 days ago |
| That’s all true. But stuff in space has a temperature, and once I’d been dead a while in LEO, mine would be -18C. |
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| ▲ | overfeed 2 days ago | parent [-] |
| > mine would be -18C FYI; that's not how it works, you and the rock you mentioned in an earlier comment cannot have the same temperature of -18C. This is due to differences in material, and geometry to a lesser extent. Even if you were rock-shaped, the rates of energy absorption and radiation is what determines your remains' temperature, this ratio differs for different materials, and thus difference fiilnal temperatures. |
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| ▲ | robotresearcher 2 days ago | parent [-] | | Sure it varies a bit. ISS average skin temp is 10C, for example. The total available energy from the sun in LEO averages about 1.36KW/m^2, and more than this is radiated away by current deployed technology. | | |
| ▲ | overfeed a day ago | parent [-] | | > Sure it varies a bit No, not just a bit. It varies by hundreds of degrees depending on the materials α/ε ratio. Your mental model is off: materials that good absorbers but poor emitters will get very hot, and the flip-side stay cool, and are used to make the cooling elements in the ISS . The temperature of ball of black nickel at 1 AU will settle at balmy 239C - not -18C. Polished Aluminum -> roughly 145C. | | |
| ▲ | robotresearcher a day ago | parent [-] | | I’ve made a note not to make my space data center a black nickel sphere, and instead to make it like we generally make satellites. My nickel guy is gonna be so disappointed. I do understand the correction, so thank you. Doesn’t change my point at all, and I fear we are talking past each other so I’ll call it a day. |
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