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Консультация № 70840
14.01.2007, 10:54
0.00 руб.
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Здравствуйте! Скажите, пожалуйста,как это решить:
Луч света падает на границу раздела двух сред воздух-алмаз.Определите длину волны света в алмазе, если длина волны света в воздухе была 750 нм, а показатель преломления алмаза=2,5.
Спасибо.
Луч света падает на границу раздела двух сред воздух-алмаз.Определите длину волны света в алмазе, если длина волны света в воздухе была 750 нм, а показатель преломления алмаза=2,5.
Спасибо.
Обсуждение
Неизвестный
14.01.2007, 13:02
общий
это ответ
Здравствуйте, KISS-KA!
длина волна = 2*pi*v/w, где v - скорость волны, w - частота волны.
v = c/n, n - показатель преломления.
Отсюда длина волны в среде с показателем преломления n равна 2*pi*c/(n*w), следовательно, длина волны уменьшилась в n раз. (т.к. показатель преломления воздуха равен 1, длина волны в нем 2*pi*c/w).
Ответ: 750/2.5 = 300 нм.
длина волна = 2*pi*v/w, где v - скорость волны, w - частота волны.
v = c/n, n - показатель преломления.
Отсюда длина волны в среде с показателем преломления n равна 2*pi*c/(n*w), следовательно, длина волны уменьшилась в n раз. (т.к. показатель преломления воздуха равен 1, длина волны в нем 2*pi*c/w).
Ответ: 750/2.5 = 300 нм.
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