Experimental report on string vibration research

The degree of freedom is the number of independent coordinates needed to determine the state of an object. According to the energy equipartition theorem in thermodynamics, the energy of each degree of freedom is equal (of course, quantum effect is not considered), which is Tk/2 (vibration includes kinetic energy and potential energy, so the vibration energy is (Tk/2)*2). A monoatomic molecule has only three translational degrees of freedom, so it is 3Tk/2. Non-rigid diatomic molecules have three translational and two rotational degrees of freedom. 1 vibration degree of freedom, so it is (3 21* 2) tk/2. The nonrigid triatomic molecule has three degrees of freedom in translation, three degrees of freedom in rotation and three degrees of freedom in vibration, so it is (3 3 * 2) tk/2. Rigid molecules do not need to consider vibration, but generally non-rigid molecules have 3*n degrees of freedom, 3 translational degrees of freedom, 3