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 (18301886)
“Letters to absence can a voice impart,
And lend a tongue when distance gags the heart.”
—Horace Walpole (17171797)
“You say Im small? I certainly can relate, although it is a matter of perspective. The distance is deceptive, my friend, you stand too low.”
—Franz Grillparzer (17911872)