#The two assumptions Einstein explained
#The first explanation
That light is composed of photons or corpuscles which is the energy which is given by Plank’s relationship.
#The second explanation
That an atom in the metal can absorb either a whole photon or nothing, part of the energy of the absorbed photon frees an electron which requires a fixed energy W, also known as Work function of the metal, the rest is converted into kinetic energy meu^2/2 of the emitted electron where me is the mass of the electron and u is the velocity.
hv=W+meu^2/2
If v is less than vo where hvo =W, thr no of electrons emitted, not all the experimental results shown above was known in 1905, but all of Einstein predictions have been verified since BOHRS THEORY OF THE ATOM.
#The first explanation
That light is composed of photons or corpuscles which is the energy which is given by Plank’s relationship.
#The second explanation
That an atom in the metal can absorb either a whole photon or nothing, part of the energy of the absorbed photon frees an electron which requires a fixed energy W, also known as Work function of the metal, the rest is converted into kinetic energy meu^2/2 of the emitted electron where me is the mass of the electron and u is the velocity.
hv=W+meu^2/2
If v is less than vo where hvo =W, thr no of electrons emitted, not all the experimental results shown above was known in 1905, but all of Einstein predictions have been verified since BOHRS THEORY OF THE ATOM.