Who Chose the CMB Temperature?
Currently the best temperature is determined to be 2.7255 +/- 0.0006 Kelvin
(Fixsen et al. 2009, ApJ, 707, 916).
[Here α =
cħ and αG
= G me2/
Let me know if you have other stupid ideas!
- Looks suspiciously like e Kelvin (=2.718281828 K).
- Is it the triple point of water divided by 100 (=2.7315 K)?
- Could it be precisely 30/11 Kelvin (=2.727 K)?
- What about -ln(9 α) Kelvin (=2.723 K)?
- Or perhaps √(15/2) Kelvin (=2.739 K)?
- How about (2 α/π)4
mec2/k (=2.762 K)?
- Or maybe (2/5) (αGme /
mpc2/k (=2.719 K)?
- Or even (4/π) α-3
- Or even better 16 √2π
- Or closer still (45/2π4)1/4
- Or in terms of Planck units, what about
e-73TPl (=2.805 K),
where TPl=√(ħc5/G)/k ?
- [and e-73 is close to
- Or turning to imperial units such as the League (=3 miles), how about
hc/k (µL)-1 (=2.98 K)?
Interested surfers with nothing better to do might like to think of reasons
why the CMB is at -270.425° Celsius or -454.765° Fahrenheit.
Last revised: April 2016