George Batchelor names a value of this quantity that characterizes the impact of molecular diffusion. The “integral” version of this quantity is defined by a spatial integral of the autocorrelation function and is generally larger than a related quantity named for Taylor. One characteristic value of this quantity is defined as nu cubed over epsilon, all raised to the one-fourth power, where nu is the kinematic viscosity and epsilon is the rate of (*) dissipation. Kinetic energy cascades from eddies with high (10[1])values of this quantity to eddies with low values of this quantity according to Kolmogorov's theory of turbulence. Density times flow velocity times this quantity (-5[1])is the numerator of the Reynolds (10[1])number. For 10 points, the period of a simple pendulum is proportional to the square root of what quantity? ■END■ (10[1])