# The relationship between waves and matter ?

After all experimental evidences, first of all photoelectric effect presented by Einstein, in 1924 Louise De Broglie intended to express a synthesis of several precedent hypothesis about a relation between the coexistent nature of wave and matter in a elementary particles. He wrote $\lambda = \frac{h}{p}$ that links a wave propriety ($\lambda$) with a matter property (p=m*v) by the Plank constant h.
The written formula is a quantistic quantitative interpretation of wave-matter duality and gives an estimate of the wavelength $\lambda$ associated to a particle of linear momentum p. On the other hand, previously was established the waves quantization introducing the particle interpretation of radiation by the photon.