石英表的石英在哪? - 手錶
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By Mason
at 2005-06-10T00:00
at 2005-06-10T00:00
Table of Contents
石英表的石英在哪?為什麼要叫石英表?
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手錶
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By Audriana
at 2005-06-11T02:11
at 2005-06-11T02:11
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By Leila
at 2005-06-14T22:12
at 2005-06-14T22:12
瓦斯爐的點火器,用的是一片壓電陶瓷,當你轉動開關時,就壓縮了裡面的彈簧,使彈簧在壓到最緊時忽然放開,彈簧下端連著的擊鎚,便迅速地敲擊在壓電陶瓷上,產生一瞬間有幾千伏特的電壓,在一根尖針和爐心之間發生放電的火花,就把瓦斯點著了。市面上有一種打火機,壓下去會發出「啪!」的響聲,也是用壓電陶瓷做的唷!
我們手上戴的石英手表(手『錶』是俗寫),也是利用石英(水晶)的壓電性設計的:由小電池供應的電能,使裡面的石英晶體產生規律的振動,累積成秒、分來計時,準確度比機械手表高很多。
點火器和石英鐘表,都是利用晶體壓電性製成的,但是點火器是壓它產生電,石英鐘表則是供給它電使它振動。
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By Bennie
at 2005-06-13T22:32
at 2005-06-13T22:32
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