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Консультация № 195553
07.05.2019, 13:11
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Уважаемые эксперты! Пожалуйста, ответьте на вопрос:
Определите радиус восьмой зоны Френеля, если радиус второй зоны Френеля для плоского волнового фронта равен 1,5 мм.
Определите радиус восьмой зоны Френеля, если радиус второй зоны Френеля для плоского волнового фронта равен 1,5 мм.
Обсуждение
11.05.2019, 17:57
общий
это ответ
Здравствуйте, evelina.xamitova!
Аналогичная задача с другими номерами зон Френеля была рассмотрена здесь. Используя те же рассуждения, получим, что
(мм) -- радиус восьмой зоны Френеля.
Если Вам нужно краткое решение, то можно воспользоваться готовой формулой, выражающей радиус зоны Френеля для плоского волнового фронта в зависимости от её номера. Такая формула есть, например, в источнике [1] на с. 92:
где 
-- радиус зоны Френеля с номером 
Расчёт остаётся тем же.
Литература
1. Оптика. Решение задач: учебное пособие / Л. И. Буров и др. -- Минск: Выш. шк., 2018. -- 334 с.
Аналогичная задача с другими номерами зон Френеля была рассмотрена здесь. Используя те же рассуждения, получим, что
(мм) -- радиус восьмой зоны Френеля.Если Вам нужно краткое решение, то можно воспользоваться готовой формулой, выражающей радиус зоны Френеля для плоского волнового фронта в зависимости от её номера. Такая формула есть, например, в источнике [1] на с. 92:
где -- радиус зоны Френеля с номером Расчёт остаётся тем же.Литература
1. Оптика. Решение задач: учебное пособие / Л. И. Буров и др. -- Минск: Выш. шк., 2018. -- 334 с.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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