phymath999
Monday, July 1, 2013
朗之萬方程(Langevin's equation) 描述布朗運動
朗之萬方程
(Langevin's equation) 描述布朗運動
phy.ntnu.edu.tw/physics/theory/Report/Langevin's%20equation.htm
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由上式可求得顆粒位移平方的平均值. 上式與朗之萬理論的結果. 若粒子帶電荷e 且處在一均勻電場ε中,則
朗之萬方程
變為. 將兩邊取平均值,且考慮穩定態時d /d t =0,
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