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abstraction > mathematical concept > symmetry > isotropy |
isotropy comparison table |
Subject | is a kind of | has antonym | has synonym | has definition |
---|---|---|---|---|
symmetry | mathematical concept | symmetry breaking | The property of being unchanged after some transformation. A square, for example, has a 4-sided rotational symmetry. It appears the same after it is rotated by 90 degrees. | |
isotropy | symmetry | anisotropy | rotational invariance | A universe is said to be isotropic, from the point of view of a given observer, if it looks the same in all directions. The isotropy of the real universe is seen most strikingly in the cosmic background radiation, which has the same temperature in all directions to an accuracy of about one part in 100,000. See also homogeneous. |
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