Distance & Length

Distance & Length

Distance and length are synonymous. Distance is the amount of space between two things and length is how we measure that distance. The Earth to Sun distance is 92,955,807 miles.

About Distance & Length

Distance (or farness) 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 is 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'. In geometric measurements, length is the longest dimension of an object. In other contexts 'length' is the measured dimension of an object. For example it is possible to cut a length of a wire which is shorter than wire thickness.