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在课堂上讲解查理定律,一般都是定性实验,定量讨论,直接给出公式而不追究公式的来源,缺乏科学方法的介绍。为了解决这个问题,我设计制作了查理定律演示仪,使该演示实验直观、准确,推导严密,学生活动面大,教学效果好。 仪器结构见图1。通过透明水箱,能直观250mL玻璃烧瓶,细绳通过木尺顶端的定滑轮可拉住右玻璃支管上下移动。
In the classroom, to explain the law of Charles, is generally a qualitative experiment, quantitative discussion, directly give the formula without seeking the source of the formula, the lack of introduction of scientific methods. In order to solve this problem, I designed a Charlie law demonstration instrument to make the demonstration experiment intuitive, accurate, derivation rigorous, students’ activities are large, and the teaching effect is good. Instrument structure shown in Figure 1. Through the transparent water tank, the 250mL glass flask can be intuitively displayed. The string can be pulled up and down by the fixed pulley at the top of the wooden ruler.