L1

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L1, L01, L.1, L 1 or L-1 may refer to:

  • L1 distance in mathematics, used in taxicab geometry
  • L1, the space of Lebesgue integrable functions in mathematics
  • L1, in linguistics, a subject's first language or mother tongue
  • L1 family, a protein family of cell adhesion molecules
  • L-1 Identity Solutions, Inc, a US face-recognition corporation
  • L1 (protein), a cell adhesion molecule
  • L-1 visa, a document used to enter the United States for the purpose of work
  • L1, Lagrangian point 1, the most intuitive position for an object to be gravitationally stationary relative to two larger objects (such as a satellite with respect to the Earth and Moon)
  • L1, one of the frequencies used by GPS systems (see GPS frequencies)
  • L1, the common name for the Soviet space effort known formally as Soyuz 7K-L1, designed to launch men from the Earth to circle the Moon without going into lunar orbit
  • L1, an abbreviation denoting someone is a Level 1 Judge, in reference to Magic: The Gathering
  • Bose L1 Portable Systems
  • L=1, a lunar eclipse classification on the Danjon scale
  • L1, the postcode for central Liverpool, a major UK city
Containing L1

Transportation and military[edit]

Locomotives[edit]

Aircraft[edit]

  • Arado L 1, a 1929 German two-seat parasol-wing sporting monoplane
  • Macchi L.1, a 1915 Austro-Hungarian reconnaissance flying boat
  • Stinson L-1 Vigilant, the US Army Air Forces designation for the Stinson Model 74 observation aircraft

Submarines[edit]

Other[edit]

See also[edit]