Comment on “Experimental investigation on cellular breakup of a planar liquid sheet from an air-blast nozzle” [ Phys. Fluids 16, 625 (2004) ]

2 pages, 2 figures.The validity of the laser diffraction technique commonly used to measure the longitudinal oscillation of an air-blasted liquid sheet was recently questioned in a paper published in Physics of Fluids.1 Some experimental results are here presented to demonstrate that it can be safely applied.Peer reviewe