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:
“Our Germanys dead. However hard this may be for some of us older people, its a blessing for our children. Our children grew up against new backgrounds, new horizons. And they are free. Free to grow up as children. Free to run and to laugh without being forced into uniforms. Without being forced to march up and down streets, singing battle songs.”
—Emeric Pressburger (19021988)
“Examples are cited by soldiers, of men who have seen the cannon pointed, and the fire given to it, and who have stepped aside from he path of the ball. The terrors of the storm are chiefly confined to the parlour and the cabin.”
—Ralph Waldo Emerson (18031882)