( sorry I have to write this part by english).
Definition 1. adiabatic wall---If a system is surrounded by the adabatic
wall, it is
said be thermoally Isolated. No energy enters a thermolly isolated system.
Definition 2. Equilibriums:
2-1: Thermal equilibrium: There is a flow of energy between systems which
eventually balances and the flow stops. This final state is call the
thermal equlibrium.
2-2: mechannical equlibrium: the volumes of each system changes until a
balance is reached and the vol
