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Уважаемые эксперты! Помогите понять где ошибка, по ходу решения задачи радиус получился отрицательным: Задача:
Определить радиус кривизны линзы, если расстояние между 13 и 5 светлыми кольцами Ньютона, наблюдаемыми в отражённом свете с длиной волны 648нм при нормальном её падении, равно 3,6мм.
Решение:
ly=648*10^-9
R13-R5=3,6*10^-3
r =sqrt(k*ly*Rk)
r =sqrt(5*ly*R5)
r =sqrt(13*ly*R13)
=> sqrt(5*ly*R5)=sqrt(13*ly*R13)
Представим R13 как R5+3,6*10^-3 и избавимся от корней
Насколько мне известно, радиус -го светлого кольца Ньютона в отражённом свете вычисляется по формуле
где -- радиус кривизны линзы, -- показатель преломления среды между линзой и пластинкой. Поэтому я хочу узнать у Вас, где Вы взяли эту формулу: Цитата: Durachok
Если им пренебречь, то радиус кривизны получается 8,57 м, это нормально, что он такой большой?
Зачем пренебречь? Чему равен показатель для воздуха? Что Вы понимаете под нормальностью? Как Вы получили значение радиуса кривизны линзы, равное м (я имею в виду окончательный расчёт с учётом нашего обсуждения)?
Ну все, вроде разобрался, большое спасибо. Вы бы не могли посмотреть другую задачу с которой у меня вообще ничего не получается? https://rfpro.ru/question/193835
Вы бы не могли посмотреть другую задачу с которой у меня вообще ничего не получается? https://rfpro.ru/question/193835
Сегодня я уже не посмотрю. Может быть, получится завтра. Дело в том, что я не люблю решать задачи по физике. Делаю это только тогда, когда есть вдохновение и на портале нет задач по математике...
Я думаю, что это то, что нужно (но могу и ошибиться). Чтобы быть более уверенным в правильности полученного ответа, вычислите, пожалуйста, исходя из полученного значения м.
Я думаю, что можно доверять выполненному Вами расчёту. Если Вы не возражаете, то завтра утром я оформлю ответ в этой консультации. Благодарю Вас за активное участие в обсуждении!
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-го светлого кольца Ньютона в отражённом свете вычисляется по формуле
-- радиус кривизны линзы, 
-- показатель преломления среды между линзой и пластинкой. Поэтому я хочу узнать у Вас, где Вы взяли эту формулу:
Durachok 
м (я имею в виду окончательный расчёт с учётом нашего обсуждения)?
Гордиенко Андрей Владимирович 
вместо 
Кроме того, у Вас 
(м).
исходя из полученного значения 
м.
