Quantum Mechanics or Quantum Physics

Quantum Mechanics or Quantum Physics
-describes the position,velocity and energy of extremely small particles (eg. atom, electron proton)

1.] Radiant energy(light) could be describe or given off only in definite quantities called quantum -Max Planck(1900).
2.] Light are composed of particles called protons.
3] Electrons are traveling around the nucleus in quantized orbits called energy levels. This is the explanation given to the atomic spectra of hydrogen atom. -Neils Bohr(1912).
4.] Electrons also exhibit wave properties. Proven by the x-ray diffraction experiments.
5.] A precise description of the path of an electron in an atom is impossible. -Werner Heisinburg(1927).
6.] We cannot describe the exact orbit or path of the electron around the nucleus, but we can describe its atomic orbitals- these are regions around the nucleus where there is a high probability of finding the electron in the region of space. -Ervin Schrodinger(926).