What is Quantum Mechanics? – An Introduction To Quantum Mechanics

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 this from the prologue.
The discovery and the development of quantum mechanics started along two different paths. One was based on the realisation that the allowed values of energy-exchange occurring between subatomic bodies are not continuous but rather discrte and involve quantum jumps. The progenitor of this path is Planck who, through his work on black-body radiation, led to its very foundation. A boost to it was given by Bohr in his theory of hydrogen atom and was carried to culmination by Heisenberg through his matrix version of quantum mechanics.

The second path was started by Einstein through his discovery of wave-particle duality of light and was furthered by de Broglie by the generalisation of the attribute of duality to the realm of matter as well. This was followed by Schrödinger was discovered the wave equation for matter waves. This wave-mechanics Version of quantum mechanics was completed by Max Born through his interpretation of matter-waves as waves of probability. It was left, finally, for Dirac to show that the two versions of quantum mechanics arc entirely equivalent.

The Big Bang

“The Universe is not only queerer than we suppose, but queerer than we can suppose.”