Basic space-time symmetries keep physical laws the same under various conditions {invariance, physics}. Baryon number, spatial rotation, and space-time translation are always invariant.
Charge conjugation, parity, and time reversal combined are invariant for all physical laws. Charge conjugation and parity together are invariant, except for strange-particle decays in weak nuclear forces. Mass-strength and strong-force-strength differences in up and down and other quarks cause charge-conjugation symmetry breaking. Parity breaks down in weak nuclear forces. Time reversal breaks down in weak nuclear forces.
Physical Sciences>Physics>Dynamics>Conservation
5-Physics-Dynamics-Conservation
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Date Modified: 2022.0224