作者shining12345 (shining)
看板Physics
标题[问题] 电磁波问题
时间Wed Mar 17 11:36:54 2010
以下是我的问题
请问有神人可以帮我解答吗?
Consider two distinct fields Ea,
Ha and Eb,Hb,which are not necessarily
related.
Suppose that the two fields are harmo
nic functions of the time with the same
frequency.
(1) Shat that
▽˙(Ea×Hb-Eb×Ha)=0
This is know as Lorentz‵s lemma.
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