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The viscosity of the gas: Determination of the diameter of the molecules. P3010201

You can get the concept of:
The kinetic theory of gases, mean free path, transport properties, laminar and turbulent flow, formula Poiseuille's.

Principle:
The viscosity of the gas is connected with aerodynamic drag. This is due to the fact that there is a transfer of momentum from the faster moving layers slower. The so-called evaporation methods provide us with a convenient way to measure the viscosity of gases. The approach used here, recorded value of the gas flow by controlling the evacuation of the vessel through a capillary tube under constant differential pressure. Using elementary kinetic theory of gases can be estimated molecular diameter of gas molecules.