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MENTAL MODEL · M5820

Parity Violation

Parity Violation
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Version 1.0.0 · Updated 2026-07-28

CORE DEFINITION

The principle of parity violation, also known as P-violation or P-nonconservation, is an extremely important principle in modern physics, proposed by physicists Tsung-Dao Lee and Chen-Ning Yang in 1956. It infers that parity conservation does not hold in weak interactions, and thus parity conservation is not universally valid.

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The principle of parity violation, also known as P-violation or P-nonconservation, is an extremely important principle in modern physics, proposed by physicists Tsung-Dao Lee and Chen-Ning Yang in 1956. It infers that parity conservation does not hold in weak interactions, and thus parity conservation is not universally valid.

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In weak interactions, the laws of physics are not symmetric under mirror reflection (parity violation), breaking the dogma that "symmetry equals beauty/truth." The world at its fundamental level allows asymmetry, and asymmetry is an essential property rather than a defect.

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    zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E5%AE%87%E7%A7%B0%E4%B8%8D%E5%AE%88%E6%81%92ZH · Explicit
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