Ortiz De Zárate Leira, José MaríaSengers, Jan V.2023-06-202023-06-202006-011539-375510.1103/PhysRevE.73.013201https://hdl.handle.net/20.500.14352/51241©2006 The American Physical Society.Recently, Wada [Phys. Rev. E 69, 031202 (2004)] presented an analysis of the long-range nature of concentration fluctuations in a binary liquid mixture subjected to a concentration gradient in a uniform shear flow as a function of the wave number k of the fluctuations. Specifically, he argued that the presence of a uniform shear causes the intensity of the concentration fluctuations to crossover from the well-known k(-4) dependence at large wave numbers to a k(-4/3) dependence for small wave numbers. The purpose of this comment is to point out that the wave-number dependence of the concentration fluctuations to be expected in realistic experimental conditions will be affected by gravity and finite-size effects.engjournal articlehttp://dx.doi.org/10.1103/PhysRevE.73.013201http://journals.aps.org/open access536Nonequilibrium FluctuationsEquilibriumFluidTermodinámica2213 Termodinámica