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Originally posted by snoopy11hk at 2005-3-30 05:40 PM: .......用 Lemon.. lor...... .........係唔係 lei?
Originally posted by 綿羊 at 2005-3-30 06:06 PM: 水果電池?= = 啥來的?= = 可吃嗎?= =
Originally posted by 颱風溫黛 at 2005-3-30 06:15 PM: 我上科學堂時老師做過這個實驗......好像是把兩塊不知是甚麼的金屬插上檸檬, 然後用鱷魚夾接駁發電.....但電力極弱.....
Originally posted by 小耀 at 2005/3/30 18:20: 是兩片不同的金屬...鎂(Mg)和銅(Cu)[常用的...] 當中鎂的活潑性較強,會先放電子... 電子經外電路流往銅,再由銅經電解質(檸檬)流回鎂... 一個閉合電路完成,可以發電了[E-Ton]
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