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在学习《摩擦起电》一节课时,我发现了一个奇怪的现象:玻璃棒也能带负电! 我用玻璃棒1在丝绸上摩擦后与验电器的金属球接触,验电器的箔片张开了。接着,我又
In the course of studying Friction Power, I discovered a strange phenomenon: the glass rod can also be negatively charged! I used a glass rod 1 to contact the metal balls of the electroscope after rubbing on the silk, and the foil of the electroscope was opened. opened. Then I again