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  • Thumbnail for Cosmic ray
    Cosmic rays or astroparticles are high-energy particles or clusters of particles (primarily represented by protons or atomic nuclei) that move through...
    96 KB (10,537 words) - 14:23, 6 May 2024
  • Thumbnail for Charles H. Townes
    Charles Hard Townes (July 28, 1915 – January 27, 2015) was an American physicist. Townes worked on the theory and application of the maser, for which he...
    37 KB (3,325 words) - 18:06, 6 April 2024
  • A geometrized unit system : 36  or geometrodynamic unit system is a system of natural units in which the base physical units are chosen so that the speed...
    10 KB (945 words) - 04:05, 3 March 2024
  • The mathematical expressions for thermodynamic entropy in the statistical thermodynamics formulation established by Ludwig Boltzmann and J. Willard Gibbs...
    29 KB (3,687 words) - 15:41, 26 April 2024
  • Thumbnail for Petzval field curvature
    Petzval field curvature, named for Joseph Petzval, describes the optical aberration in which a flat object normal to the optical axis (or a non-flat object...
    6 KB (691 words) - 13:42, 6 August 2023
  • In the kinetic theory of gases in physics, the molecular chaos hypothesis (also called Stosszahlansatz in the writings of Paul Ehrenfest) is the assumption...
    5 KB (601 words) - 10:22, 16 May 2023
  • Hafeez Hoorani or Hafeez-ur-Rehman Hoorani or Hafeez R. Hoorani is a Pakistani particle physicist, with a specialisation in accelerator physics, and a...
    10 KB (815 words) - 21:28, 12 October 2023