能量守恒是一個原理，無法給出一般的證明。

來源: 於 2010-05-10 16:19:29 [舊帖] [給我悄悄話] 本文已被閱讀：次

In the electromagnetic theory, the law of energy conservation is described by Poynting thereom. Can you give me a specific example that violate this law? Thanks.