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  • Term: quark passport
    Key Words: , passport, pouch
    Related Terms: passport pouch

    quark passport!


    quark passport

    Comprehensive Analysis



    1) "Quark" -- As to quark passport

    quark
    Pronunciation: 'kwork, 'kwärk
    Function: noun
    Etymology: coined by Murray Gell-Mann
    : any of several elementary particles that are postulated to come in pairs (as in the up and down varieties) of similar mass with one member having a charge of + 2/3 and the other a charge of - 1/3 and are held to make up hadrons
    Pronunciation Symbols

    These are the six flavors of quarks and their most likely decay modes. Mass decreases moving from right to left.

    In particle physics, quarks are one of the two basic constituents of matter (the other are the leptons). Quarks are the only fundamental particles that interact through all four of the fundamental forces. The word was borrowed by Murray Gell-Mann from the book Finnegans Wake by James Joyce, where seabirds give "three quarks", akin to three cheers (probably onomatopoetically imitating a seabird call, like "quack" for ducks).

    Quarks come in six flavors , and their names (up, down, strange, charm, bottom, and top) were also chosen arbitrarily based on the need to name them something that could be easily remembered and used.

    Antiparticles of quarks are called antiquarks.

    Isolated quarks are never found naturally; they are almost always found in groups of two (mesons) or groups of three (baryons) called hadrons. This is a direct consequence of confinement, explained below.

    • 1 Free quarks
    • 2 Confinement and quark properties
    • 3 Flavor
    • 4 Spin
    • 5 Color
    • 6 Quark masses
      • 6.1 Current quark mass
      • 6.2 Valence quark mass
      • 6.3 Heavy quark masses
    • 7 Properties of quarks
    • 8 Antiquarks
    • 9 Substructure
    • 10 History
    • 11 See also
    • 12 References and external links
      • 12.1 Primary and secondary sources
      • 12.2 Other references
    1974 discovery photograph of a possible charmed baryon, now identified as the Σc++

    No search for free quarks or fractional electric charges has returned convincing evidence..."



    2) "Passport" -- As to quark passport

    pass·port
    Pronunciation: 'pas-"port
    Function: noun
    Etymology: Middle English (Scots) pasport, from Middle French passeport, from passer to pass + port port, from Latin portus -- more at FORD
    1 a : a formal document issued by an authorized official of a country to one of its citizens that is usually necessary for exit from and reentry into the country, that allows the citizen to travel in a foreign country in accordance with visa requirements, and that requests protection for the citizen while abroad b : a license issued by a country permitting a foreign citizen to pass or take goods through its territory : SAFE-CONDUCT c : a document of identification required by law to be carried by persons residing or traveling within a country
    2 a : a permission or authorization to go somewhere b : something that secures admission, acceptance, or attainment <education as a passport to success>
    Pronunciation Symbols

    The British passport contains biometric information about the holder that has been encoded into an electronic chip. The EU standard format is for passports to be Burgundy The title page of European Union member state passports bears the name European Union, then the name of the issuing country, in the official languages of all EU countries. Here is an old style non-biometric British passport.

    A passport is a travel document issued by a national government that usually identifies the bearer as a national of the issuing state and requests that the bearer be permitted to enter and pass through other countries.

    Passports are connected with the right of legal protection abroad and the right to enter one's country of nationality. Passports usually contain the holder's photograph, signature, date of birth, nationality, and sometimes other means of individual identification. Many countries are in the process of developing biometric properties for their passports in order to further confirm that the person presenting the passport is the legitimate holder.

    • 1 History
    • 2 Types
    • 3 Standards
      • 3.1 Technical characteristics
      • 3.2 Languages
      • 3.3 Common designs
      • 3.4 National status
    • 4 Government restrictions and special cases
      • 4.1 China (PRC and ROC) and colonial passports in Hong Kong and Macau
      • 4.2 Cyprus
      • 4.3 Israel
      • 4.4 Koreas
      • 4.5 Pakistan
      • 4.6 Saudi Arabia
      • 4.7 Spain and Gibraltar
      • 4.8 Tonga
      • 4.9 Republic of Ireland and Northern Ireland
    • 5 International travel without passports