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Magic pencil I.

This lesson presents how the conductivity of graphite is influenced by size, pressure, and the composition of the pencil lead. You will also learn about the basics of resistance and electrical conduction.

物理

成绩11 – 12

作者: Dr. Stonawski Tamás

审稿人: Trauer János

图形的: Gyulai Kamilla

程序员: Tóth Martin

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