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12.4: Межа між діелектриками
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B_ {z} (r, t) =\ frac {n} {c}\ sin\ тета A e^ {i (\ vec {k}\ cdot\ vec {r} -\ омега t)} +\ frac {n} {c}\ sin\ тета R_ {\ perp} A e^ {i (\ vec {k}\ cdot\ vec {r} -\ омега т)} &\ текст {для} z\ leq 0\\ ...B_ {z} (r, t) =\ frac {n} {c}\ sin\ тета A e^ {i (\ vec {k}\ cdot\ vec {r} -\ омега t)} +\ frac {n} {c}\ sin\ тета R_ {\ perp} A e^ {i (\ vec {k}\ cdot\ vec {r} -\ омега т)} &\ текст {для} z\ leq 0\\ E_ {z} (r, t) =-\ frac {c} {n}\ sin\ тета А e^ {i (\ vec {k}\ cdot\ vec {r} -\ омега т)} -\ frac {c} {n}\ sin\ тета R_ {\ |} A e^ {i (-\ тильда {\ vec {k}}\ cdot\ vec {r} -\ омега т)} &\ текст {для} z\ leq 0\\