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Planck's constant

   Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia, Hutchinson 0.07 sec.
Planck's constant (plängks), fundamental constant of the quantum theory quantum theory, modern physical theory concerned with the emission and absorption of energy by matter and with the motion of material particles; the quantum theory and the theory of relativity together form the theoretical basis of modern physics.
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. It is represented by the letter h and has a value of 6.63 × 10−34 J-sec. The combination h/2π, denoted by h (called "h-bar"), occurs frequently.
Planck's constant

A fundamental physical constant which represents the elementary quantum of action, action being defined as energy multiplied by time. Introduced by Max Planck in 1900, it has the value h = 6.6261 × 10-27 erg-second or 6.6261 × 10-34 joule-second. The symbol ℏ, sometimes called the Dirac h, is often used for convenience in physics to denote the quantity h/2π, where π = 3.1416….

As used by Planck in deriving his radiation law, h multiplied by the frequency of radiation represented a bundle of energy, that is, a quantum of energy. Radiant energy at any wavelength can occur only as multiples of this energy; thus energy is quantized. See Compton effect, Fundamental constants, Heat radiation, Quantum mechanics



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Those are the size of the electron's charge, the speed of light, and Planck's constant, which defines the scales at which quantum phenomena operate.
33 MeV) + [Beta] - where h is Planck's constant and v is the frequency in Hz.
It describes quintessence by using only simple constants of nature, such as the speed of light, the gravitational constant, and Planck's constant of quantum mechanics.
 
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