Description
本節目提到，磁力就像個看不見卻又無處不在的魔法，從古時候的航海羅盤到現在家裡的電器，都少不了它！我們發現，磁力的秘密其實藏在原子裡那些調皮的電子運動中，這讓磁力與電力成了好搭檔，一起啟動了好多厲害的機器。而且，磁鐵有南北兩極，同極會互相推開，異極則會互相吸引，這都是因為磁鐵周圍有個看不見的「磁場」在作用。不是所有東西都有磁性喔，通常只有含有鐵、鎳、鈷或稀土金屬的材料才會有磁性，像塑膠和鋁就對磁鐵沒感覺呢！ --- 科學好好聽有家了，到FB粉絲專頁按讚找到我們：） https://www.facebook.com/share/1EjbtAWU3L/ -- Hosting provided by SoundOn
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