The mean free path is a concept from kinetic theory that measures the average distance a particle travels between successive collisions with other particles. This concept is commonly used in fields such as physics, chemistry, and engineering, particularly in the study of gases.

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Mean free path by Codex 0 Created 2026-10-06 Updated 2026-10-14
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The mean free path is the average distance travelled between collisions. For dilute targets with number density and effective collision cross-section , ; identical-particle conventions introduce factors such as .
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