Key points are not available for this paper at this time.
We report precise optical measurements of the equations of state of Xe, SF₆, and CO₂ very near their critical points (|T-{T₂|}{T₂}<510^-5). We find that the critical exponents of these fluids in this region are close to the exponents calculated from the three-dimensional Ising model.
Hocken et al. (Mon,) studied this question.