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Консультация № 200477
23.03.2021, 13:51
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
Чему должна быть равна ширина дифракционной решетки с периодом 20 мкм,чтобы в спектре первого порядка был разрешен дублет λ=404,4 нм и λ=404,7 нм?
если можно с подробным решением.
Чему должна быть равна ширина дифракционной решетки с периодом 20 мкм,чтобы в спектре первого порядка был разрешен дублет λ=404,4 нм и λ=404,7 нм?
если можно с подробным решением.
Обсуждение
23.03.2021, 22:09
общий
это ответ
Здравствуйте, naduha21794!
Предлагаю Вам следующее решение задачи.
Дано:
м -- период дифракционной решётки; 
нм и 
нм -- длины волн близких линий спектра дифракционной решётки; 
-- порядок спектра.
Определить:
-- ширину дифракционной решётки.
Чтобы раздельно видеть две близкие линии, соответствующие длинам волн
и 
необходимо выполнение условия
где
-- число щелей решётки. Значит, в рассматриваемом случае при получим
(м)
мм.
Ответ:
мм.
Литература
Маскевич А. А. Оптика: учеб. пособие. -- Гродно: ГрГУ, 2010. -- 562 с.
Предлагаю Вам следующее решение задачи.
Дано:
м -- период дифракционной решётки; нм и нм -- длины волн близких линий спектра дифракционной решётки; -- порядок спектра.Определить:
-- ширину дифракционной решётки.Решение
Чтобы раздельно видеть две близкие линии, соответствующие длинам волн
и необходимо выполнение условиягде
-- число щелей решётки. Значит, в рассматриваемом случае при получим (м) мм.Ответ:
мм.Литература
Маскевич А. А. Оптика: учеб. пособие. -- Гродно: ГрГУ, 2010. -- 562 с.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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