Move a bar magnet near one or two coils to make a light bulb glow.
在一两枚硬币附近移动磁棒来让灯泡发光。
The magnetic state of a bar magnet or a horseshoe magnet is extremely complicated.
条形磁铁或马蹄形磁铁的磁态是极其复杂的。
The Earth's magnetic field is roughly like that of a bar magnet, with two opposite poles.
地球的磁场大致就像是一块拥有两个磁极的磁铁。
The voltage pulse induced by a bar magnet as it moves at constant velocity through the axis of a circular coil is analyzed.
分析了条形磁铁沿线圈轴向匀速通过线圈时感应引起的电压脉冲。
This system adopts 16 bits MCU as the core control device to achieve a bar magnet exactitude measure of small range displacement.
系统采用十六位单片机作为核心控制器件，实现磁棒小范围位移的精确测量。
My 12 year old had a lesson in his science course later that day that mapped magnetic fields of a little bar magnet. He showed me the results.
当天的晚些时候，我12岁的大儿子在他的自然科学课上绘制了一幅磁铁的磁场分布图。他向我展示他的成果。
My 12 year old had a lesson in his science course later that day that mapped magnetic fields of a little bar magnet.
当天的晚些时候，我12岁的大儿子在他的自然科学课上绘制了一幅磁铁的磁场分布图。
A bar on horseshoe magnet is called a permanent magnet.
棒形或马蹄形磁体称为永磁体。
The inverse effect also occurs: a spinning bar magnet will cause a suspended copper disk to rotate.
逆效应，也会发生：纺纱条形磁铁将导致暂停铜磁盘旋转。
Explore the interactions between a compass and bar magnet.
探究指南针和磁棒之间的相互作用。
Explore the interactions between a compass and bar magnet.
探究指南针和磁棒之间的相互作用。
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