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PT theta surface

LH.28. (old departmental catalogue number in aluminium paint). NAT. PHIL. LH.28., NP.502.(on white preprinted and gummed label, removed) N.B.isotherms are cut into the surface of the wood in horizontal lines and the theoretical surface was painted white. MANU Unsigned. circa 1900 Glasgow, University, Glasgow. Scotland. This is a wooden model of the theoretical thermodynamic surface for carbonic ac…