直徑Φ12mm長(zhǎng)95mm強(qiáng)磁針，直徑Φ12mm長(zhǎng)95mm強(qiáng)磁棒 演示奧斯特實(shí)驗(yàn)，驗(yàn)證環(huán)形電流磁場(chǎng)方等實(shí)驗(yàn)，也可用于學(xué)生分組實(shí)驗(yàn) strongmagneticrodwithΦ12mmand95mmlong strongbarmagnetneedleΦ12mmand95mmlong 1.UsestrongmagneticneedleorstrongmagneticrodwithΦ12mmdiameterand95mmlengthtodemonstrateOerstedexperiment 2.UseastrongbarmagnetwithdiameterΦ12mmand95mmlengthtodemonstratethemagneticfielddirectionofringcurrent有關(guān)演示視頻請(qǐng)參閱網(wǎng)址www.mzhsx.com