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Originally posted by calos818 at 2009-9-13 08:04:
Á¿Ö¹Í³¼ÆÊéÉϺܶ඼ÊÇÍÆµ¼£¬ÏëÇë½ÌÏ£¬Æä¿¹´ÅµÄÎïÀí±¾Öʵ½µ×ÊÇʲô£¬»òÕß˵ʲôԭÒòµ¼ÖÂÁ˸ÃÇé¿öϵĿ¹´Å£¿Ð»Ð»´ó¼ÒÁË¡­¡­

circular motion of FREE electrons of a materials in a magnetic field. This circular motion of electrons can be looked as a closed current flow loop. and remaining, you can refer to the post on floor #2

One more thing, you all know that the mean speed of thermal motion of FREE electrons at room temperature is about 10^5 m/s (very fast). These FREE electrons will finally be trapped by a magnetic field and then behave as what the speaker on the 2nd floor says. Landau diamagnetism is different from Larmor diamagnetism which is from electrons on filled orbits or shell of atoms in a material. good luck.

[ Last edited by bote on 2009-9-13 at 14:29 ]
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