守恒定律 Conservation law
在物理学里,假若孤立物理系统的某种可观测性质遵守守恒定律(law of conservation),则随着系统的演进,这种性质不会改变。
诺特定理是关于守恒定律的重要理论。诺特定理表明,每一种守恒定律,必定有其伴随的物理对称性。例如,伴随着能量守恒的是物理系统对于时间的不变性。不论在空间的取向为何,物理系统的物理行为一样,这性质导致角动量守恒。
单词 | Principle of conservation of momentum |
释义 |
Principle of conservation of momentum
中文百科
守恒定律 Conservation law(重定向自Principle of conservation of momentum)
在物理学里,假若孤立物理系统的某种可观测性质遵守守恒定律(law of conservation),则随着系统的演进,这种性质不会改变。 诺特定理是关于守恒定律的重要理论。诺特定理表明,每一种守恒定律,必定有其伴随的物理对称性。例如,伴随着能量守恒的是物理系统对于时间的不变性。不论在空间的取向为何,物理系统的物理行为一样,这性质导致角动量守恒。
英语百科
Conservation law 守恒定律(重定向自Principle of conservation of momentum)
In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time. Exact conservation laws include conservation of energy, conservation of linear momentum, conservation of angular momentum, and conservation of electric charge. There are also many approximate conservation laws, which apply to such quantities as mass, parity, lepton number, baryon number, strangeness, hypercharge, etc. These quantities are conserved in certain classes of physics processes, but not in all. |
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