IYPT 1989, Задачи на турнира — Задача 6. Rainbow
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
Is it possible that three or more rainbows can appear on the sky simultaneously?
Note [11]
A different problem at the Correspondence Round [Kvant 1988]: “Soap bubble. What determines the “lifetime” of a soap bubble? Why does it pop and how does it happen?” In [Jordens 1989], the problem reads: “Soap bubbles. What determines the “lifetime” of a soap bubble? Why does it burst and how does that happen?”
Решение
Внимание: Непълно решение
В архива няма официално решение на тази задача.
Оригинал в Архива: 1989.pdf