particle mechanics
6.In this thesis,based on the three steps of wave breaking on the particle bank—injection,run-up and wash down,the author analyzed the force and movement of particles on slopes,represented the mechanics of the wash-out of particle bank slopes by waves,designated the key factors which should be thought about when studying and preventing the wash-out destruction.
7.Several new physics experiments in 1998 were performed and analyzed to showthe subtlety of quantum theory,including the “wave-particle duality” and the nonseparability of two-particle entangled s tate.Here it is shown that the measurement is bound to change the object by dest roying the original quantum coherence between the object and its environment.So the “physical reality” should be defined at two levels,the “thing in itself” and the “thing for us”.The wave function in quantum mechanics is just playing the role for connecting the two levels of matter via the fictitious measurement .
8.The study of the symmetry and eigen energy spectrum of a charged Dirac particle moving in a uniform constant magnetic field is an important task in many fields of physics, such as the observable effects of the neutron star with strong magnetic field, the spin effect and relativistic effect in quantum Hall effect , supersymmetric quantum mechanics and so on.
9.This paper discussed the difference of wavelength between de Broglie wave and photon, the significance of the imaginary number i in quantum mechanics, the space symmetry of the wave function in some one-dimensional problems, and the distribution of momentum for a particle in an infinite potential well.
10.Based on the three postulates of vacuum fluctuation, the preconditions of relativity and quantum mechanics, including velocity limit of any moving particle and energy-frequency relation as well as de Broglie wavelength expression of any matter are reached, and the significance of the study of vacuum fluctuation in the unification of physics theories is indicated.

