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Magic pencil III.
The resistance of a graphite pencil changes when it is bent. The experiment demonstrates the roles of mechanical effects, hysteresis, and microcracks in the material's electrical conductivity.
Fizika
8.-12. klase
Autors: Dr. Stonawski Tamás
Korektors: Trauer János
Grafiskais dizaineris: Gyulai Kamilla
Programmētājs: Tóth Martin
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