The fluid slip for a dilute gas is proportional to a parameter equal to 1.15 times this value. The Elliot-Yafet spin flip mechanism, unlike the Dyakonov-Perel mechanism, depends linearly on this parameter. Conductivity is equal to n e-squared over m times Fermi velocity all times this quantity. MHD assumes that this quantity is much smaller than a 
The fluid slip for a dilute gas is proportional to a parameter equal to 1.15 times this value. The Elliot-Yafet spin flip mechanism, unlike the Dyakonov-Perel mechanism, depends linearly on this parameter. Conductivity is equal to n e-squared over m times Fermi velocity all times this quantity. MHD assumes that this quantity is much smaller than a related characteristic. Ballistic transport occurs when this value for an electron is much greater than the (*) dimension of the system. The Knudsen number contains this value in the numerator, and this quantity is equal to kT over square root of 2 times pi times diameter times pressure. The mean velocity times this value is equal to the diffusion coefficient, and this quantity is inversely proportional to both the particle density and the cross section. For 10 points, name this quantity, the average distance that a particle travels before colliding with another.
The fluid slip for a dilute gas is proportional to a parameter equal to 1.15 times this value.
mean free path