Talk:State postulate

The link to 'multiphase systems' links to an article about electricity transmission. 68.231.194.95 (talk) 04:45, 14 December 2015 (UTC)

what does it mean by the two intensive properties specifying the state of the system?

This is a weakened form of Gibbs' Phase Rule, from Gibbs' book about heterogeneous systems. Any confusion about this, which is bizarrely called a postulate, would be cleared up by reading Gibbs' book about heterogeneous systems, or certain more recent work by Jaynes. eigenlambda (talk) 15:38, 15 June 2016 (UTC)

peculiar statement leaks from here to another article
Indeed Çengel & Boles (2015) do write their state postulate as quoted in the article: The state postulate says: The state of a simple compressible system is completely specified by two independent, intensive properties

But it isn't the usual thermodynamic view. The usual thermodynamic view demands at least one extensive state variable in addition to a suitable list of intensive variables. The state includes the total extent of the system.

It is regrettable that this peculiar view offered by Çengel & Boles (2015) has leaked into the article on Intensive and extensive properties, as


 * The distinction between intensive and extensive properties has some theoretical uses. For example, in thermodynamics, according to the state postulate: "The state of a simple compressible system is completely specified by two independent, intensive properties". Other intensive properties are derived from those two variables.Chjoaygame (talk) 06:21, 13 July 2020 (UTC)