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Консультация № 190365
28.12.2016, 19:18
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
Расстояние между двумя когерентными источниками 1,1 мм ... Источники испускают монохроматический свет с длиной волны 0,55 мкм. Определить число интерференционных полос, приходящихся на 1 см длины экрана
Расстояние между двумя когерентными источниками 1,1 мм ... Источники испускают монохроматический свет с длиной волны 0,55 мкм. Определить число интерференционных полос, приходящихся на 1 см длины экрана
Обсуждение
30.12.2016, 11:52
общий
Адресаты:
Не пропустили ли Вы в условии задачи указание о том, каково расстояние между источниками света?
Об авторе:
Facta loquuntur.
Facta loquuntur.
02.01.2017, 08:42
общий
это ответ
Здравствуйте, nikita9581!
Учитывая Ваше гордое молчание в ответ на просьбу уточнить условие, сделаем это уточнение самостоятельно. Тогда у задачи будет такая формулировка:
[i]Расстояние между двумя когерентными источниками 1,1 мм, а расстояние от источников до экрана 2,5 м. Источники испускают монохроматический свет с длиной волны 0,55 мкм. Определить число интерференционных полос, приходящихся на 1 см длины экрана.[/i]
Заимствуем рисунок из четвёртого тома "Общего курса физики" Д. В. Сивухина, изменим его под рассматриваемый случай и используем как иллюстрацию к решению задачи.
Введём обозначения
м - расстояние между источниками света;
м - расстояние от источников до экрана;
- угол схождения интерферирующих лучей;
м - длина волны света;
- ширина интерференционной полосы (смотрите здесь);
м - длина экрана, для которой нужно вычислить число интерференционных полос;
- число интерференционных полос на длине 
Для вычислений используем формулы из того же учебника. Получим
Учитывая Ваше гордое молчание в ответ на просьбу уточнить условие, сделаем это уточнение самостоятельно. Тогда у задачи будет такая формулировка:
[i]Расстояние между двумя когерентными источниками 1,1 мм, а расстояние от источников до экрана 2,5 м. Источники испускают монохроматический свет с длиной волны 0,55 мкм. Определить число интерференционных полос, приходящихся на 1 см длины экрана.[/i]
Заимствуем рисунок из четвёртого тома "Общего курса физики" Д. В. Сивухина, изменим его под рассматриваемый случай и используем как иллюстрацию к решению задачи.
Введём обозначения
м - расстояние между источниками света; м - расстояние от источников до экрана; - угол схождения интерферирующих лучей; м - длина волны света; - ширина интерференционной полосы (смотрите здесь); м - длина экрана, для которой нужно вычислить число интерференционных полос; - число интерференционных полос на длине Для вычислений используем формулы из того же учебника. Получим
Об авторе:
Facta loquuntur.
Facta loquuntur.
Форма ответа
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