Question

Defeen mean free part ?​

Answer 1

Answer:

What do you mean?

I can't understand

Answer 2

Answer:

In physics, the mean free path is the average distance travelled by a moving particle (such as an atom, a molecule, a photon) between successive impacts (collisions), which modifies its direction or energy or other particle properties. It is the mean distance travelled by an electron between scattering events.