A228163 Loschmidt constant n_0 in the 2019 SI system in unit m^(-3).

2, 6, 8, 6, 7, 8, 0, 1, 1, 1, 7, 9, 8, 4, 4, 3, 8, 2, 2, 4, 4, 8, 1, 5, 3, 1, 5, 7, 4, 4, 7, 3, 6, 8, 1, 1, 8, 4, 8, 2, 4, 0, 0, 2, 0, 3, 5, 2, 3, 2, 5, 5, 3, 8, 3, 8, 9, 1, 9, 9, 6, 8, 7, 4, 3, 1, 8, 9, 4, 4, 2, 4, 8, 0, 3, 9, 4, 9, 2, 4, 4, 9, 0, 7, 5, 7, 5

Offset: 26

Author

Arkadiusz Wesolowski, Aug 14 2013

Keywords

• cons
• easy
• nonn

Comments

The Loschmidt constant is exactly 1 amagat.

2006 CODATA value is 2.6867774(47) * 10^25 m^-3.

2010 CODATA value is 2.6867805(24) * 10^25 m^-3.

Measured at 0 degrees C and 1 atm (273.15 K, 101.325 kPa).

From Jianing Song, Jul 06 2019: (Start)

Equals (p_0)/(k*T_0), where p_0 = A213611 = 101325 Pa is the standard pressure, k = A070063 = 1.380649*10^(-23) J/K is the Boltzmann constant and T_0 = 273.15 K is the standard temperature. In the May 20 2019 redefinition of the SI base units k is fixed to an exact value, so n_0 is also fixed to an exact value.

Equals (p_0*N_A)/(R*T_0), where N_A = A322578 is the Avogadro constant, R = A070064 is the molar gas constant.

As this constant can also be represented as 6755/2514161829 * 10^32 (see below), this sequence is purely periodic with period 1910112. (End)

Examples

			n_0 = 2.686780111... * 10^25 m^-3.
		

References

• Christian Iliadis, Nuclear Physics of Stars, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2007, p. 225.

Links

• Wikipedia, Amagat
• Wikipedia, Loschmidt constant

Crossrefs

Cf. A070063, A070064, A213611, A322578.

Formula

Equals 101325/((1.380649*10^(-23))*273.15) (exact). - Jianing Song, Jul 06 2019

Extensions

Updated to the May 20 2019 redefinition of the SI base units by Jianing Song, Jul 06 2019