Optics/Evidence for light as a stream of particles

With the help of the impulse of a particle and the impulse of a(n electromagnetic) wave, evidence for light being a stream of particles and vice versa can be found. In classical physics, the impulse/momentum of a “normal particle” is defined as: p Louis de Broglie found that the wavelength of an electromagnetic wave can be approached with the quotient of Planck’s constant over the impulse of the wave . dBλ Therefore, we conclude that an electromagnetic wave is just a stream of particles and vice versa.