Cardiology

Is long-distance running good for the heart?

As you can tell by all those 26.2-mile bumper stickers popping up around the country, the popularity of marathons and long-distance running continues to grow. But so has the number of studies examining whether consistent ...

Neuroscience

Phantom limb sensation explained

After a limb amputation, brain areas responsible for movement and sensation alter their functional communication. This is the conclusion of a new study published today in Scientific Reports. According to the authors, from ...

Psychology & Psychiatry

Head off the blues when your teen heads to college

(HealthDay)—As excited as you are that your teen's going to college, it's normal to have mixed emotions, such as anxiety, sadness and possibly depression. It's even normal to feel envious that his or her life is just beginning ...

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Distance

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 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".

This text uses material from Wikipedia, licensed under CC BY-SA