物理学中的守恒定律及其地位

On conservation laws and their status in physics

从时间的均匀性可推得机械能守恒定律 ,从空间的均匀性和空间的各向同性可分别推出动量守恒定律和角动量守恒定律 .如果没有时空对称性 ,就根本谈不上物理学 .因此 ,守恒定律是物理学的基石 。

From the homogeneity of time we can deduce mechanical energy conservation law, and from the homogeneity and isotrogy of space we can deduce monentum conservation law and angular momentum conservation law. There were no sciences without symmetry. Conservation laws are the corner stones in physics, together with elemental laws and various of phenomena they construct the whole physics building layer upon layer.