从科学性、简捷性来衡量,部分高中物理学生实验改进的必要。有些实验只需作一些简单改进,就能获得良好的效果。本文介绍的三则实验改进便属此例。1 选择合适的间距,绘好等势线描绘电场中的等势线普遍会出现等势线不对称,甚至畸变的反常现象。学生实验是用长方形导电纸上的电流场来模拟无界空间等量异种电荷的静电场。二者既有其相似性,又有其不同点。电流场 Measured by scientificity and simplicity, some high school physics students need to improve their experiments. Some experiments need only a few simple improvements to get good results. The three experimental improvements described in this article are examples of this. 1 Choosing the right spacing and equipotential lines to describe the equipotential lines in the electric field will generally lead to asymmetry of the equipotential lines, and even to aberration anomalies. The student experiment uses a current field on a rectangular conductive paper to simulate an electrostatic field in an unbounded space with the same amount of dissimilar charge. Both have similarities and differences. Current field