en.wikipedia.org/wiki/Reduced_Planck_constantThe Planck constant, or Planck's constant, is the quantum of electromagnetic action that relates a photon's energy to its frequency. The Planck constant multiplied by a photon's frequency is equal to a photon's energy. The Planck constant is a fundamental physical constant denoted as , and of fundamental importance in quantum mechanics.In metrology it is used to define the kilogram in SI units.
infogalactic.com/info/Planck_constantThe resulting constant is called the reduced Planck constant or Dirac constant. It is equal to the Planck constant divided by 2π, and is denoted ħ (pronounced "h-bar"): The energy of a photon with angular frequency ω, where ω = 2πf, is given by. while its linear momentum relates to. where k is a wavenumber.
physics.nist.gov/cgi-bin/cuu/Valuereduced Planck constant in eV s: Numerical value: 6.582 119 569... x 10-16 eV s : Standard uncertainty (exact) Relative standard uncertainty (exact) Concise form 6.582 119 569... x 10-16 eV s : Click here for correlation coefficient of this constant with other constants
simple.wikipedia.org/wiki/Planck_constantThe reduced Planck constant (ħ) is a value that is sometimes used in quantum mechanics. It is defined by =. Planck units are sometimes used in quantum mechanics instead of SI. In this system the reduced Planck constant has a value of 1, so the value of the Planck constant is 2π.
www.britannica.com/science/Plancks-constantPlanck’s constant, fundamental physical constant characteristic of the mathematical formulations of quantum mechanics, which describes the behavior of particles and waves on the atomic scale, including the particle aspect of light. The German physicist Max Planck introduced the constant in 1900.
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en.wikipedia.org/wiki/H-barH-bar or h-bar can refer to: . H with stroke, a Latin letter H with a doubled horizontal stroke (Ħ ħ); Reduced Planck's constant, in which the above symbol represents as a mathematical symbol, ħ = h/(2π); Antihydrogen, an antimatter element represented by the symbol H; Steyr AUG HBAR, a light machine gun version of the AUG assault rifle; Multirests, indicated in musical notation through H-bars
encyclopedia2.thefreedictionary.com/Reduced+Planck+ConstantLooking for Reduced Planck Constant? Find out information about Reduced Planck Constant. Symbol: h . A fundamental constant with the value 6.626 076 × 10–34 joule seconds. According to quantum theory, electromagnetic radiation has a dual nature.... Explanation of Reduced Planck Constant