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Planck relation. The Planck relation[ 1][ 2][ 3] (referred to as Planck's energy–frequency relation, [ 4] the Planck–Einstein relation, [ 5] Planck equation, [ 6] and Planck formula, [ 7] though the latter might also refer to Planck's law [ 8][ 9]) is a fundamental equation in quantum mechanics which states that the energy E of a photon ...
The Planck constant, or Planck's constant, denoted by ,[ 1] is a fundamental physical constant [ 1] of foundational importance in quantum mechanics: a photon 's energy is equal to its frequency multiplied by the Planck constant, and the wavelength of a matter wave equals the Planck constant divided by the associated particle momentum.
Livestock branding is a technique for marking livestock so as to identify the owner. Originally, livestock branding only referred to hot branding large stock with a branding iron, though the term now includes alternative techniques. Other forms of livestock identification include freeze branding, inner lip or ear tattoos, earmarking, ear ...
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H&E stain; scale bar = 50 µm. Louping-ill ( / ˈlaʊpɪŋɪl /) is an acute viral disease primarily of sheep that is characterized by a biphasic fever, depression, ataxia, muscular incoordination, tremors, posterior paralysis, coma, and death. Louping-ill is a tick -transmitted disease whose occurrence is closely related to the distribution of ...
Catherine[ c] is a puzzle video game developed by Atlus. The game was released for the PlayStation 3 and Xbox 360 in Japan and North America in 2011, in PAL regions by Deep Silver in 2012, and for Windows by Sega in 2019. A re-release with additional content, titled Catherine: Full Body, [ d] was released in 2019 for the PlayStation 4 worldwide ...
Pole vaulting, also known as pole jumping, is a track and field event in which an athlete uses a long and flexible pole, usually made from fiberglass or carbon fiber, as an aid to jump over a bar. Pole jumping was already practiced by the ancient Egyptians, ancient Greeks and the ancient Irish people, although modern pole vaulting, an athletic ...
A city pub, the World's End, Camden Town, London. The Ale-House Door (painting of c. 1790 by Henry Singleton) A pub (short for public house) is in several countries a drinking establishment licensed to serve alcoholic drinks for consumption on the premises. The term first appeared in England in the late 17th century, to differentiate private ...