superbob201 t1_jc04vlv wrote on March 13, 2023 at 1:38 AM

Reply to comment by Chemomechanics in If the temperature of a system depends on its average kinetic energy, does it mean the "de facto" temperature depends on the speed of the observer? by Dryu_nya

One annoying thing about blackbody radiation is that is still looks like blackbody radiation after Doppler shifting. It's why the CMB has a blackbody temperature of 2.7K, even though it is coming from ionized hydrogen.