Replying to Avatar Peter Todd

That link is for infrared thermometer readings. Hence, low temperature.

It's bizarre how you are surprised by this. Anodization greatly increases the surface roughness of aluminum. This information is easy to find from lots of sources:

https://www.gabrian.com/anodized-aluminum-heatsinks-what-you-need-to-know/#:~:text=The%20emissivity%20of%20an%20anodized,(which%20utilize%20a%20fan).

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Low Information Voter 1y ago

Okay, much better, now that one says 0.85.

Day-um, wild if true. Wonder that oxide thickness, and if they've published a paper. Not very important in-atmosphere or when surrounded by other FIR-emitting things, but in space...

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