IYPT 1996, Задачи на турнира — Задача 14. Coherer

9th IYPT (1996)

Заглавие в източника

Source: Turnaj mladých fyzikov : štatút a úlohy, 1996, 37—39
Selected shortly before Dec. 1995
Exemplary solutions for 1996 →

Условие

It is known that a glass tube with two electrodes and metallic filings between them (coherer) has different resistance in d.c. and a.c. circuits. Investigate the frequency dependence of the coherer’s resistance.

Решение

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Оригинал в Архива: 1996.txt