Принципы радиосвязи

11 класс, раздел 2, урок 5 — завершение раздела. Урок 4: ЭМ-волны, c=λνc = \lambda\nu, спектр. Радиосвязь использует радиоволны (длинные λ\lambda, низкие ν\nu по сравнению со светом).

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