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Magic pencil III
The resistance of a graphite pencil changes when it is bent. This experiment demonstrates the role of mechanical effects, hysteresis, and microcracks in the electrical conductivity of materials.
物理
成绩8 – 12
作者: Dr. Stonawski Tamás
审稿人: Trauer János
图形的: Gyulai Kamilla
程序员: Tóth Martin
关键词
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