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Консультация № 195715
26.05.2019, 11:02
0.00 руб.
0
3
1
Уважаемые эксперты! Пожалуйста, ответьте на вопрос:
. Параллельный пучок света от монохроматического источника (λ = 0,5 мкм) падает нормально на диафрагму с круглым отверстием диаметром 1 мм. Темным или светлым будет центр дифракционной картины на экране, находящемся на расстоянии 0,5 м. от диафрагмы?
. Параллельный пучок света от монохроматического источника (λ = 0,5 мкм) падает нормально на диафрагму с круглым отверстием диаметром 1 мм. Темным или светлым будет центр дифракционной картины на экране, находящемся на расстоянии 0,5 м. от диафрагмы?
Обсуждение
26.05.2019, 16:55
общий
Предлагаю удалить консультацию № 195719 как дубль этой.
Об авторе:
Facta loquuntur.
Facta loquuntur.
27.05.2019, 10:15
общий
Адресаты:
Об авторе:
"Если вы заметили, что вы на стороне большинства, —
это верный признак того, что пора меняться." Марк Твен
"Если вы заметили, что вы на стороне большинства, —
это верный признак того, что пора меняться." Марк Твен
28.05.2019, 19:48
общий
это ответ
Здравствуйте, Дмитрий!
По формуле на с. 92 [1] радиус внешней границы зоны Френеля с номером
для плоской волны составляет 
где 
-- расстояние от диафрагмы до экрана, 
-- длина волны. Тогда диаметр зоны Френеля 
откуда при 
м, 
м, 
м получим
то есть в отверстии диафрагмы укладывается нечётное число зон Френеля. Поэтому центр дифракционной картины будет светлым [1, с. 92].
Литература
1. Оптика. Решение задач / Л. И. Буров и др. -- Минск: Выш. шк., 2018. -- 334 с.
По формуле на с. 92 [1] радиус внешней границы зоны Френеля с номером
для плоской волны составляет где -- расстояние от диафрагмы до экрана, -- длина волны. Тогда диаметр зоны Френеля откуда при м, м, м получимто есть в отверстии диафрагмы укладывается нечётное число
зон Френеля. Поэтому центр дифракционной картины будет светлым [1, с. 92].Литература
1. Оптика. Решение задач / Л. И. Буров и др. -- Минск: Выш. шк., 2018. -- 334 с.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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