We rely on the fact that the laws of nature will apply tomorrow just as they do today. This property is a symmetry property, an invariance of the laws with respect to translations in time. The same applies to translations of the coordinate origin or rotations of the coordinate system. The strength of gravity on Earth is different from that on the Moon, but the law of gravity is the same.

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Elements of Group Theory

  • Andreas Wipf

摘要

We rely on the fact that the laws of nature will apply tomorrow just as they do today. This property is a symmetry property, an invariance of the laws with respect to translations in time. The same applies to translations of the coordinate origin or rotations of the coordinate system. The strength of gravity on Earth is different from that on the Moon, but the law of gravity is the same.