Kolmogorov equation in a fully developed turbulence experiment

The Kolmogorov equation with a forcing term is compared to experimental mea surements, in low temperature helium gas, in a range of microscale Reynolds numbers R-lambda between 120 and 1200. We show that the relation is accura tely verified by the experiment (i.e., within +/-3% relative error, over ra nges of scales extending up to three decades). Two scales are extracted fro m the analysis, and revealed experimentally, one characterizing the externa l forcing and the other, varying as R-lambda(-3/5) defining the position of the maximum of the function -S-3(r)/r, and for which a physical interpreta tion is offered.