IYPT 1995, Задачи на турнира — Задача 13. Air lens

8th IYPT (1995)

Заглавие в източника

Sources: Školská Fyzika, 1994/1995, 3, 70—71, Rozhledy mat.-fyz. 72, 1995, 2, 102—104, Dev. Tal. in Phys., 93—94, 1995
Selected at the Preparatory Seminar in Warsaw on Oct. 13—15, 1994
Exemplary solutions for 1995 →

Условие

Lenses are usually made of solids and sometimes made of liquids. Construct an optical lens made of air in such a way that light can travel through the lens without crossing any material but air. Determine on which factors the focal length of an air lens depends.

Решение

---

Оригинал в Архива: 1995.txt