Ýëåêòðîìàãíèòíûå âîëíû.
- ôàçîâàÿ ñêîðîñòü
Îòðàæåíèå
Ïðåëîìëåíèå
=0
lim ïàä=arcsin(c2/c1)
- ôàçîâàÿ ñêîðîñòü
- ôàçîâàÿ ñêîðîñòü