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:
“A worker may be the hammer’s master, but the hammer still prevails. A tool knows exactly how it is meant to be handled, while the user of the tool can only have an approximate idea.”
—Milan Kundera (b. 1929)
“But while they prate of economic laws, men and women are starving. We must lay hold of the fact that economic laws are not made by nature. They are made by human beings.”
—Franklin D. Roosevelt (1882–1945)
Related Phrases
Related Words