(TianShui Normal University ,Department of Physics, Gansu province, TianShui ,741000)
[Abstract]: De Broglie waves from the basic equations derived through series, discussed the free particle volatility, wave function, the expression of the atom in motion around the nucleus of the electron wave forms and experimental proof. And electron microscope, no doubt that DE Broglie waves, finally discussed the correctness of the phase velocity and the group velocity, and the expression of the product for speed for understanding the square, quantum mechanics and the uncertainty of the particle physics essence of reference to a certain extent.
[Keyword] : De Broglie wave , Wave-particle duality, Wavelet function, Speed, Wavelet packet, The group velocity