Abstract: Some mistakes present in the paper written by Isenberg I.et al.are pointed out, and two new methods for deriving the Halleffect formula are offered.

Key words: Hall effect, Laplace equation, boundary conditions, end effects

摘要： 本文指出了Isenberg等人的论文中所存在的问题，并提出了两种推导霍耳效应公式的新方法。

关键词: 霍耳效应, 拉普拉斯方程, 边界条件, 边缘效应