Particles of matter also have a wavelength, called the de Broglie wavelength, given by \(\lambda = \frac{h}{p}\), where \(p\) is momentum. Matter is found to have the same interference characteristic...Particles of matter also have a wavelength, called the de Broglie wavelength, given by \(\lambda = \frac{h}{p}\), where \(p\) is momentum. Matter is found to have the same interference characteristics as any other wave.