Mean Free Path in Acoustics
In an otherwise empty cavity, the mean free path of a single particle bouncing off the walls is:
where V is volume of the cavity and S is total inside surface area of cavity. This relation is used in the derivation of the Sabine equation in acoustics, using a geometrical approximation of sound propagation.
Read more about this topic: Mean Free Path
Famous quotes containing the words free and/or path:
“You only have power over people so long as you don’t take everything away from them. But when you’ve robbed a man of everything he’s no longer in your power—he’s free again.”
—Alexander Solzhenitsyn (b. 1918)
“A few hours’ mountain climbing turns a rogue and a saint into two roughly equal creatures. Weariness is the shortest path to equality and fraternity—and liberty is finally added by sleep.”
—Friedrich Nietzsche (1844–1900)