IYPT 1989, Задачи на турнира — Задача 5. Clock
Problems for the 2nd International Young Physicists’ Tournament
Внимание: Бележка към темата
The original header prints 1988, although this is the 2nd IYPT problem set for 1989; the edition’s note [1] and its bibliography identify the 1989 event. The printed header is retained.
Critical edition
Olympiets Youth Center, Moscow, Soviet Union; March 24‒April 2, 1988 [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
Squamps are hunted from the inside only.
S. Lem [3]
Условие
You have visited a planet and you plan to return to it in ten thousand or even in a million years. What clock would you leave on this planet to measure precisely the time of your absence from the planet? [10]
Note [9]
A different problem at the Correspondence Round [Kvant 1988]: “Chladni patterns. Research the Chladni patterns for a disk and for a square.” In [Jordens 1989], the problem reads: “Khladni figures. Study the Khladni figures for the disk and for the square”
Note [10]
“What kind of clock you have to leave on the planet for precisely measuring of the time during your absence from the planet”, according to the 2006 English text [Proceedings 2006]. The Russian source for the problem [MGU 1989] is almost fully identical to the problem No. 1 in [Soyuz 1989]
Решение
Внимание: Непълно решение
В архива няма официално решение на тази задача.
Оригинал в Архива: 1989.pdf