The Quantum Theory of Radiations by Max Planck can explain the photoelectric effect very well. Max Planck says that light is made of bundles of energy known as photons, energy…
It was Robert Millikan who tested the Einstein photoelectric equation. He first calculated the kinetic energy gained by the emitted electrons for a number of frequencies by applying an opposing…
Well it is very much evident that photoelectric effect can only be explained if particle nature of light is considered. But there are some phenomenons like diffraction, polarization of light…
There was one major objection to the Rutherford model of atom and Bohr was the one to point it out. So while giving his Theory of hydrogen atom, he took…
According to Bohr, when an electron from its initial stationary orbit with n= ni jumps to another (lower) stationary orbit with n=nf, it emits energy equal to the difference between…
Bohr was able to calculate the radii as well energies of the stationary orbit around the nucleus in an atom and those calculated values were found to be in a…
Though the Bohr and sommerfeld were able to explain the atomic spectra of hydrogen and like species but still there were many anomalies to their theory. Both Bohr’s theory and…
In 1905, it was Einstein who suggested the concept of light having a dual nature; particle and wave nature. In a similar way, Louise de Broglie suggested that electron also…
Electromagnetic waves are very much different from the matter waves and in many ways. a) Speed of matter waves is very much less than the speed of electromagnetic waves. b)…
Let us consider an electron revolving around a nucleus of an atom. The wave train formed by it is as shown in figure. Now, for the wave to be in…
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