1, conversion between Kelvin temperature and Celsius temperature. t=T-273. 15
2. The difference between equilibrium state, quasi-static process and non-static process. For an isolated system, if its macroscopic nature
After a long enough time, it remains unchanged, that is, the state parameters of the system no longer change with time, and the system is in equilibrium at this time. However, if the system is in the process of change, and each intermediate state is close to the equilibrium state wirelessly, it is called a quasi-static process.
3. Equation of state of ideal gas: Pay attention to the definitions of Boltzmann constant and Schmidt constant.
4. Joule experiment defines the mechanical equivalent of heat. If the temperature of the system is increased by doing work and heat transfer, it will be transferred.
There is always a certain proportional relationship between heat and work done, that is, 1 calorie =4. 18 joules of work, and work and heat are equivalent. Although work and heat transfer are equivalent, they are essentially different. Work: It is accomplished through the macroscopic displacement of an object. Function is the conversion between mechanical motion and irregular motion of molecules in the system. Thereby changing the internal energy. Heat transfer: through intermolecular interaction. Function is the conversion between the irregular thermal motion of external molecules and the irregular thermal motion of molecules in the system. Thereby changing the internal energy.