# Talk:Loschmidt constant

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As far as I remember, the Loschmidt constant or number is nothing else but the Avogadro constant. It looks quite strange to call the number of atoms in a gas per cubic meter a constant, since it's only constant at a given pressure and temperature for an ideal gas. --88.68.121.16 18:53, 7 September 2007 (UTC)

The formula given in the article for the relationship between Avogadro's Number and Loschmidts number is:

N(a) = n(0) p/kT


This cannot be right, the first formula has:

n(0) = p/kT


resulting in:

N(a) = n(0)^2


Which is obviously wrong. I am going to make an edit now to correct this. Spinningspark 21:41, 2 October 2007 (UTC)

## Confused

By [1] p. 139, it states that Loschmidt's number is Avogadro's number divided by 22,400. I am confused.--Filll (talk) 21:20, 12 March 2008 (UTC)

${\displaystyle N_{A}=6.02214179\times 10^{23}\quad molecules/mole\,\!}$
${\displaystyle n_{0}={\frac {N_{A}}{22400}}={\frac {6.02214179\times 10^{23}}{22400}}=2.6884562\times 10^{19}\quad molecules/ml}$
${\displaystyle n_{0}=2.6884562\times 10^{25}\quad molecules/m^{3}\,\!}$
${\displaystyle n_{0}=2.6867774\times 10^{25}\quad molecules/m^{3}\,\!}$