Törmäystiheys
Törmäystiheys, or collision frequency, is a fundamental concept in physics, particularly in the study of gases and plasmas. It refers to the average number of collisions that a single particle experiences within a given volume and time interval. This quantity is crucial for understanding various macroscopic properties of matter, such as viscosity, thermal conductivity, and electrical resistance.
The collision frequency depends on several factors, including the number density of particles (how many particles
In the kinetic theory of gases, the collision frequency is often used to derive other important parameters.
The concept is also vital in astrophysics and plasma physics, where it helps explain phenomena like stellar