Principle of relativity

A Principle is an idea that is taken as fundamentally true. Principles play somewhat the role of axioms in logic and mathematics, or more loosely, as foundations or guides on which to build beliefs or theories. The "Principle of Relativity" is one of these.

Various "Principles of Relativity" have been assumed in belief systems and disciplines throughout history. The belief (or definition) that any law of nature should be the same in all circumstances is one of the most common. But this sense is not always the case as in, q.v.,

The only common thread may be that the term "relativity" occurs in each. Also see Relativism. This article discusses the scientific uses of the term.

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