“The subject of thermodynamics is complicated because there are so many different ways of describing the same thing.” — Richard Feynman

Ideal Gas Law

When we connect Boyles law with Charles’ law and Avogadro’s principle we get an interesting relation called the ideal gas law

Kinetic theory of gases

If we imagine particles in an ideal gas as solid balls that collide with the walls of a container and eachother with classical mechanics we can derive pressure as

derive this from simple model

Reversibility