Approximate Laws
There are also approximate conservation laws. These are approximately true in particular situations, such as low speeds, short time scales, or certain interactions.
- Conservation of mass (applies for non-relativistic speeds and when there are no nuclear reactions)
- Conservation of baryon number (See chiral anomaly)
- Conservation of lepton number (In the Standard Model)
- Conservation of flavor (violated by the weak interaction)
- Conservation of parity
- Invariance under Charge conjugation
- Invariance under time reversal
- CP symmetry, the combination of charge and parity conjugation (equivalent to time reversal if CPT holds)
Read more about this topic: Conservation Law
Famous quotes containing the words approximate and/or laws:
“the dull thunder of approximate words.”
—Thom Gunn (b. 1929)
“Let every American, every lover of liberty, every well wisher to his posterity, swear by the blood of the Revolution, never to violate in the least particular, the laws of the country; and never to tolerate their violation by others.”
—Abraham Lincoln (1809–1865)