Failure Of Classical Theories And Rise Of Quantum Mechanics

There was a time when people use to follow classical theories like Classical Mechanics and Classical Electrodynamics for each and every physical explanation. But as our research moved to the minute and microscopic levels of atoms, electrons, protons, etc, the classical theories failed to explain their motion as well as characteristics.

Classical Theories Failed to explain :

1. The motion of electrons round the nucleus in an atom. According to classical theories a charged particle under acceleration or deceleration radiates electromagnetic energy. Thus electron in an will follow a spiral motion round the nucleus and will eventually collapse with the nucleus, which contradicts the stability of the atom. Thus classical theory fails.

2. The classical theories cannot explain about the discrete set of spectral lines of Hydrogen Atoms.

The failure of classical theory led to the development of a new theory or mechanics called Quantum Mechanics.

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