According to the spring and summer education inquiry, the relationship between momentum and wavelength was put forward by De Broglie. He believes that physical particles also follow these laws. When a physical particle with mass m moves, it has energy e and momentum p; In terms of volatility, it has a wavelength λ and a frequency F. According to De Broglie relation, the relationship between photon momentum and wavelength is p=h/λ, where h is Planck constant and v is photon velocity. Change P into mv and get the wavelength formula of physical particles: λ=h/(mv). This relationship was later called de Broglie formula.