Parsons equation of state for hard rods
The Parsons equation of state (EOS) for hard rods is given by (Eq. 22 of Ref. 1)
where is the packing fraction, and Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle \alpha (\eta )} was substituted for the Carnahan-Starling equation of state.