IYPT 1991, Задачи на турнира — Задача 8. Photograph of a television screen
Problems for the 4th International Young Physicists’ Tournament
Critical edition
Olympiets Youth Center, Moscow, Soviet Union; July 22‒28, 1991 [1]
Critical edition: translated, restored, and commented text [2]
FINAL DRAFT. — Please do not re-publish. Suggestions and criticism welcome
Translated, edited and commented by Ilya Martchenko. The original edition’s historical notes, sources and acknowledgments are retained with problem 1.
Епиграф
Is this black currant?
No, it is red currant.
But why is it white?
Because it is still green. [3]
Условие
The motion of a camera’s shutter and its speed may be studied through taking photographs of a television image. [14] With this technique, measure the exposure time of your camera and the speed of the shutter.
Note [14]
The 1991 English text mentions the necessity to take a photograph of TV image only in the title of the problem, not in the text itself. It reads overall, “TV_screen photo”: ”It is possible to investigate the motion of shuttes in your camera and determine the velocity of their motion. In this way measure, please, exact values of exposures for your camera and its shuttes speed”
Решение
Внимание: Непълно решение
В архива няма официално решение на тази задача.
Оригинал в Архива: 1991.pdf