http://korzhimanov.livejournal.com/ (
korzhimanov.livejournal.com
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sly2m
2016-03-10 05:11 pm (UTC)
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Смотрю. Слева производная по координате, справа производная по времени. Дифференцируем бегущую волну sin(k(x-ct)) и получаем верное равенство, то есть поля E и В изменяются синфазно.
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