Limitations of Old Quantum Theory :  The quantum theory based on Bohr’s quantum condition and Wilson-Sommerfeld quantum rule is known as old quantum theory. It is unable to explain some problems, e.g., energy states of hydrogen atom, particle in infinite square well, harmonic oscillator, etc. The main limitations of the old quantum theory are as … More Limitations of Old Quantum Theory

Compton Effect : When a beam of monochromatic X-rays(or Gama-rays) is scattered by a light element such as carbon, the scattered radiation in a particular direction consists not only of the unmodified incident primary radiation , as expected classically , but also of another new modified radiation of slightly shorter frequency ( or longer wavelength) … More The Compton Effect : Kinetics of Compton Scattering

Planck’s Quantum Hypothesis : In the Back ground of ultraviolet catastrophe, Planck put forward his daring hypothesis of discontinuous process of energy-exchange and assumed that the basic quantum of energy  is proportional to the frequency.                   E = hv where, h = Planck’s Const.         … More Planck’s Quantum Hypothesis : Concept Of Quantization of Energy

INTRODUCTION TO QUANTUM MECHANICS : In sharp contrast to classical physics, quantum mechanics is an entirely new outlook of interpreting the behaviours of submicroscopic world on the idea of an essential discontinuity—the quantum. It gives us a radically new world-view and has revolutionised the way of our thinking about the world. We have already learnt … More What is Quantum Mechanics? – An Introduction To Quantum Mechanics