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theeinstein paradox
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5 Feb 2012 20:59:05 IST
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the length between the centres of any two objects
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5 Feb 2012 22:51:36 IST
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Distance is a numerical description of how far apart objects are.
In physics, distance may refer to a physical length, or an estimation based on other criteria. In mathematics, a distance function or metric is a generalization of the concept of physical distance.











