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在物理学习中,有意识地进行物理科学方法的练习,是培养科学素养,逐步树立科学世界观,提高自身智力水平,促进自身发展的重要途径.下面以电场章节隐含的重要科学方法为例,通过例题逐一进行分析.一、对称法对称法是利用事物的对称特点,寻找对称条件下有关物理量的等量关系,使研究过程简捷、直观,从而达到避繁就简、事半功倍、出奇制胜的解题效果.例1如图1(a)所示,两平行正对的金属板A、B间加有如图1(b)所示的交变电压,一重力可忽略不计的带正电粒子被固定
In physics study, consciously carrying out the practice of physical science method is an important way to cultivate scientific literacy, gradually establish a scientific world outlook, improve one’s intelligence level and promote one’s own development.The following takes the important scientific method implicit in the electric field chapter as an example, Examples of one by one analysis, a symmetrical method of symmetry is to use the symmetry of things to find symmetrical conditions under the same amount of physical relationship, so that the research process is simple and intuitive, so as to avoid the simple, less effective, surprisingly successful solution to the problem Example 1 As shown in Fig. 1 (a), an alternating voltage as shown in Fig. 1 (b) was applied between two metal plates A and B facing in parallel. A positively charged particle with negligible gravity was fixed