* Julia Thompson ([EMAIL PROTECTED]) wrote:
> What in the universe has a temperature of around 1.9*10^11?  (C or K, take 
> your pick.)

According to Wien's law, the peak emission wavelength of a blackbody at
temperature T is

lambda = 0.29 cm-K / T

So the peak wavelength of a blackbody at 1.9e11 is

lambda = 1.5e-12 cm = 1.5e-14 m

Energy = h c / lambda = 1.3e-11 J = 83 MeV

Search the web for something that emits 83 MeV photons!


--
Erik Reuter   http://www.erikreuter.net/
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