Distance

Distance is a numerical description of how far apart objects are. In physics or everyday discussion, distance may refer to a physical length, or an estimation based on other criteria (e.g. "two counties over"). In mathematics, a distance function or metric is a generalization of the concept of physical distance. A metric is a function that behaves according to a specific set of rules, and provides a concrete way of describing what it means for elements of some space to be "close to" or "far away from" each other. In most cases, "distance from A to B" is interchangeable with "distance between B and A".

Read more about Distance:  Distance Versus Directed Distance and Displacement, Other "distances"

Famous quotes containing the word distance:

    The distance that the dead have gone
    Does not at first appear—
    Their coming back seems possible
    For many an ardent year.
    Emily Dickinson (1830–1886)

    Letters to absence can a voice impart,
    And lend a tongue when distance gags the heart.
    Horace Walpole (1717–1797)

    You say I’m small? I certainly can relate, although it is a matter of perspective. The distance is deceptive, my friend, you stand too low.
    Franz Grillparzer (1791–1872)