神奇浮磁滾軸
此磁浮滾軸用磁浮力平衡在半空, 由於浮在空氣沒有半點磨擦力,
它能不斷地轉動很的時間, 有如裝了馬達般.
Item no: FMR 8336
FLOATING magnetic roller
Very popular apparatus, its applied the repel force of magnets and the resultant
force between forces then make the roller floating and balance in air. Suitable
for student to learn about magnetic force action, magnetic pole properties,
resultant force action and remind pupils invention is very important in human
life.
Item no: FMR 8336
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