- theorised that matter may display both wave- and particle-like properties like light
- predict wavelength of a particle with $\lambda = {h \over \rho}$ where $\rho = mv$
- impossible to confirm de Broglie's theory of matter with double-slit experiment, since wavelengths are much smaller than for light, requiring an equally small slit ($< r_{\operatorname{proton}}$)
- theorised that matter may display both wave- and particle-like properties like light
- predict wavelength of a particle with $\lambda = {h \over \rho}$ where $\rho = mv$
- impossible to confirm de Broglie's theory of matter with double-slit experiment, since wavelengths are much smaller than for light, requiring an equally small slit ($< r_{\operatorname{proton}}$)