**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"

### Other articles related to "distance, distances":

**Distance**- Other "

**distance**s"

... E-statistics, or energy statistics, are functions of

**distances**between statistical observations ... Mahalanobis

**distance**is used in statistics ... Hamming

**distance**and Lee

**distance**are used in coding theory ...

**Distance**

... There are three common long

**distance**running events in track and field competitions 3000 metres, 5000 metres and 10,000 metres ... The 3000 m was historically used as a women's long

**distance**event, entering the World Championship programme in 1983 and Olympic programme in 1984, but this was abandoned in favour of a women's 5000 m ... In terms of competition rules and physical demands, long

**distance**track races have much in common with middle

**distance**races, except that pacing, stamina, and race tactics become much ...

**Distance**

... Further information Middle

**distance**track event The most common middle

**distance**track events are the 800 metres, 1500 metres and mile run, although the 3000 metres may also be classified as a ... The 880 yard run, or half mile, was the forebear of the 800 m

**distance**and it has its roots in competitions in the United Kingdom in the 1830s ... Physiologically, these middle

**distance**events demand that athletes have good aerobic and anaerobic energy producing systems, and also that they have strong speed endurance ...

... to the inverse fourth-power of the

**distance**... accurately where an object appears on the sky, but cannot measure the

**distance**accurately at all ... Radar, on the other hand, directly measures the

**distance**to the object (and how fast it is changing) ...

... length sets up the fixed relationship between the field of view and the working

**distance**... Working

**distance**is the

**distance**between the back of the lens and the target object ...

### Famous quotes containing the word distance:

“As *distance* shows a horse’s strength, so time reveals a person’s heart.”

—Chinese proverb.

“A petty reason perhaps why novelists more and more try to keep a *distance* from journalists is that novelists are trying to write the truth and journalists are trying to write fiction.”

—Graham Greene (1904–1991)

“One sees qualities at a *distance* and defects at close range.”

—Victor Hugo (1802–1885)