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Line-of-sight or line of sight may refer to:

  • Line-of-sight (missile), the straight line between the missile and the target
  • Line-of-sight propagation, electro-magnetic waves travelling in a straight line
  • Line of sight (gaming), visibility on a gaming field, i.e. who can see what
  • Direct fire or line-of-sight fire, shooting directly at a visible target on a relatively flat trajectory
  • Radial velocity or line-of-sight velocity, an object's speed straight towards or away from an observer
  • Sightline, an unobstructed line-of-sight between a subject and object
  • Leonardo da Vinci's term for a structure within the human eye, according to eye movement in reading
  • a line-of-sight double star, one in which the two stars are only coincidentally close together as seen from Earth

See also[edit]