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  2. Geopositioning - Wikipedia

    en.wikipedia.org/wiki/Geopositioning

    Geopositioning is the process of determining or estimating the geographic position of an object or a person. [1] Geopositioning yields a set of geographic coordinates (such as latitude and longitude ) in a given map datum .

  3. Distance of closest approach - Wikipedia

    en.wikipedia.org/wiki/Distance_of_closest_approach

    The objects may be geometric shapes or physical particles with well-defined boundaries. The distance of closest approach is sometimes referred to as the contact distance. For the simplest objects, spheres, the distance of closest approach is simply the sum of their radii. For non-spherical objects, the distance of closest approach is a function ...

  4. Entrance pupil - Wikipedia

    en.wikipedia.org/wiki/Entrance_pupil

    Once the size and the location of the entrance pupil of an optical system is determined, the maximum cone of rays that the system will accept from a given object plane is determined solely by the size of the entrance pupil and its distance from the object plane, without any need to consider ray refraction by the optics. [1]

  5. Human echolocation - Wikipedia

    en.wikipedia.org/wiki/Human_echolocation

    Location is generally broken down into distance from the observer and direction (left/right, front/back, high/low). Dimension refers to the object's height (tall or short) and breadth (wide or narrow). By understanding the interrelationships of these qualities, much can be perceived about the nature of an object or multiple objects.

  6. Geometric terms of location - Wikipedia

    en.wikipedia.org/wiki/Geometric_terms_of_location

    Common geometric terms of location are: Radial (solid and colored lines) and circumferential roads (dashed and gray lines) in Metro Manila's road network. Axial – along the center of a round body, or the axis of rotation of a body; Radial – along a direction pointing along a radius from the center of an object, or perpendicular to a curved ...

  7. Binocular disparity - Wikipedia

    en.wikipedia.org/wiki/Binocular_disparity

    The blue object lies nearer to the observer. Therefore, it has a "near" disparity d n. Objects lying more far away (green) correspondingly have a "far" disparity d f. Binocular disparity is the angle between two lines of projection . One of which is the real projection from the object to the actual point of projection.

  8. Principle of locality - Wikipedia

    en.wikipedia.org/wiki/Principle_of_locality

    In physics, the principle of locality states that an object is influenced directly only by its immediate surroundings. A theory that includes the principle of locality is said to be a "local theory". This is an alternative to the concept of instantaneous, or "non-local" action at a distance.

  9. Comoving and proper distances - Wikipedia

    en.wikipedia.org/wiki/Comoving_and_proper_distances

    In standard cosmology, comoving distance and proper distance (or physical distance) are two closely related distance measures used by cosmologists to define distances between objects. Comoving distance factors out the expansion of the universe , giving a distance that does not change in time except due to local factors, such as the motion of a ...