● Electromagnetism and electrodynamics study electromagnetic phenomena, laws of electromagnetic motion and electromagnetic radiation of matter.
● Thermodynamics and statistical physics study the statistical laws and macroscopic manifestations of thermal motion of matter.
Relativity and space-time physics study the high-speed motion effect of objects, the related dynamic laws and the laws about the relativity of time and space.
● Quantum mechanics studies the motion phenomena and basic laws of microscopic matter.
In addition, there are:
Particle physics, nuclear physics, atomic and molecular physics, solid physics, condensed matter physics, laser physics, plasma physics, geophysics, biophysics, astrophysics, acoustics, electromagnetism, optics, radio physics, heat, quantum field theory, low temperature physics, semiconductor physics, magnetism, liquid crystal, medical physics, nonlinear physics, computational physics and aerodynamics.
General theoretical mechanics, electrodynamics, material mechanics, thermodynamics and statistical physics, and quantum mechanics are also collectively referred to as mechanics.