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   1  2005-05-23 09:29:01
鐵磁性的材料應該都可以吧! 電磁鋼片導磁效果好,可以把磁場阻絕掉.

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   1  2005-05-23 09:49:07
It is a very basic question for magnetic circuit design engineers. First, the realtive magnetic permeability of materials are as follows; (1) Bismuth 0.99983 (2) Silver and Lead 0.99993 (3) Copper 0.999991 (4) Air 1.0000004 (5) Aluminium 1.00002 (6

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   1  2005-05-23 12:50:43
http://home.pchome.com.tw/family/lih0300/01.jpg 由於磁鐵無法切割,如圖中A與B之磁鐵我須如何將上下兩端綠色部分之磁力隔絕消失??只剩餘中間黃色圖區部分?? 鐵磁性金屬分別覆蓋於A及B之正上方即可嗎??鐵磁性金屬是將磁力導掉還是隔絕啊?? 不太懂的磁力原理的門外漢

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   1  2005-05-24 14:43:27
I do not know what do you mean in the figure. Please describe exactly the dimensions of the permanent magnets and the magnetization directions. How strong are the magnets in terms of Br and Hc.

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