Boltzmann constant: Difference between revisions

Revision as of 10:41, 25 October 2007

The Boltzmann constant ( $k$ or $k_{B}$ ) is the physical constant relating temperature to energy.

It is named after the Austrian physicist Ludwig Eduard Boltzmann. Its experimentally determined value (in SI units, 2002 CODATA value) is:

k_{B} = 1.3806505 (24) \times 1 0^{- 23}

J K^{- 1}

= 8.617343 (15) \times 1 0^{- 5}

e V

K^{- 1}

In units with molecular significance it is close to 1, e.g. DL_POLY units.

@@ Line 7: / Line 7: @@
 ::<math> =8.617 343(15) \times 10^{-5}</math>  <math>\left.eV\right.</math> <math>\left.K^{-1}\right.</math>
+In units with molecular significance it is close to 1, e.g. [[DL_POLY | DL_POLY units]].
 ==See also==
 *[http://dx.doi.org/10.1103/PhysRevLett.98.250801 C. Daussy, M. Guinet, A. Amy-Klein, K. Djerroud, Y. Hermier, S. Briaudeau, Ch. J. Bordé, and C. Chardonnet "Direct Determination of the Boltzmann Constant by an Optical Method", Physical Review Letters '''98''' 250801 (2007)]
 [[Category: Physical constants]]