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pion    音標拼音: [p'ɑɪ,ɑn]
n. ｋ介子

ｋ介子

pion
n 1: a meson involved in holding the nucleus together; produced
as the result of high-energy particle collision [synonym:
{pion}, {pi-meson}]

Meson \Mes"on\, n. [NL., fr. Gr. me`son middle, neut. of me`sos,
a., middle.]
1. (Anat.) The mesial plane dividing the body of an animal
into similar right and left halves. The line in which it
meets the dorsal surface has been called the dorsimeson,
and the corresponding ventral edge the ventrimeson. --B.
G. Wilder.
[1913 Webster]

2. (Physics) An elementary particle made up of two quarks; a
hadron having a baryon number of zero; any hadron other
than a baryon. Mesons are bosons with integral values of
spin, having a mass intermediate between those of the
electron and a nucleon; they may have positive or negative
charges, or may be neutral. Mesons are of three types: the
{pion} ([pi]-meson), {kaon} (K-mesons), and
{[eta]-mesons}.
[PJC]

{mu meson} (Physics) the former name for the {muon}, a
particle which is not a true meson[2]. The term is no
longer used in technical literature, except historically.
[PJC]

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英文字典中文字典相關資料:
  • Pion - Wikipedia
    The pion is one of the particles that mediate the residual strong interaction between a pair of nucleons This interaction is attractive: it pulls the nucleons together
  • Pion - Leader in Next-Gen Pharma Development
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  • Pinion - Food Ag Consulting: Specialized Advisory Services
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  • PION Definition Meaning - Merriam-Webster
    The meaning of PION is a meson that is a combination of up and down quarks and antiquarks, that may be positive, negative, or neutral, and that has a mass about 270 times that of the electron
  • PION Definition Meaning | Dictionary. com
    The pion was once believed to be the particle that mediates the strong force, which holds nucleons together in the nucleus; it is now believed that the gluon is the mediator particle Pions do interact with nucleons, however, and are able to transform neutrons into protons and vice versa
  • pion - Wiktionary, the free dictionary
    pion (plural pions) (particle physics) Any of three semistable mesons, having positive, negative or neutral charge, composed of up and down quarks antiquarks
  • PION definition and meaning | Collins English Dictionary
    pion in American English (ˈpaɪˌɑn ) noun Origin: pi 2 + meson particle physics
  • PI?ON PETROLEUM LLC in Bozeman, MT | Company Info Reviews - Bizapedia
    Discover Company Info on PI?ON PETROLEUM LLC in Bozeman, MT, such as Contacts, Addresses, Reviews, and Registered Agent
  • What does PION mean? - Definitions. net
    In particle physics, a pion is any of three subatomic particles: π0, π+, and π− Pions are the lightest mesons and they play an important role in explaining the low-energy properties of the strong nuclear force
  • About Us - We are Pion
    Pion serves drug food researchers, formulators, and manufacturers globally where data quality, accuracy and reproducibility are valued components of a product development process





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