Skip to main content

Posts

Showing posts with the label Quantum Mechanics

A BRIEF HISTORICAL SKETCH OF THE QUANTUM MECHANICS

Classical Works which led finally to transform ideas of Classical Mechanics into Quantum Mechanics & its applications:- 1.   The beginning of quantum theory was the discovery, by Max Planck, of the electromagnetic  energy quanta emitted  by a black body. The work was published under the title: “ Über   das Gesetz der Energieverteilung im Normalspektrum ”2  in Annalen der Physik , 4 (1901) 553. 2.      Four years later Albert Einstein published a paper “ Über die Erzeugung und Verwandlung des Lichtes betreffenden heuristischen Gesichtspunkt ” in  Annalen der Physik , 17 (1905)   132, in which he explained the photoelectric effect by assuming that the energy is  absorbed  by a metal as quanta of energy. 3.      In 1911 Ernest Rutherford discovered that atoms are   composed of a massive nucleus and electrons: “ The Scattering of the  α  and  β  Rays and the Structure o...