"Each of the most basic physical laws that we know corresponds to some invariance, which in turn is equivalent to a collection of changes which form a symmetry group. ...whilst leaving some underlying theme unchanged. ...for example, the conservation of energy is equivalent to the invariance of the laws of motion with respect to translations backwards or forwards in time... the conservation of linear momentum is equivalent to the invariance of the laws of motion with respect to the position of your laboratory in space, and the conservation of angular momentum to an invariance with respect to directional orientation... discovery of conservation laws indicated that Nature possessed built-in sustaining principles which prevented the world from just ceasing to be. There were fewer roles for the Deity to play..."
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University of Cambridge facultyMathematicians from EnglandScience authorsCosmologistsPhysicists from England
Original Language: English
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Ch. 2, pp. 22-23
https://en.wikiquote.org/wiki/John_D._Barrow
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John D. Barrow
John David Barrow, FRS (November 29, 1952 – September 27, 2020) was an English cosmologist, theoretical physicist, mathematician, writer of popular science, and an amateur playwright.
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