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dong tai ping heng tiao jian xia ce li shi yan zai tan jiu
Author(s): 
Pages: 20-21
Year: Issue:  4
Journal: Experiment and Equipment for Primary School

Abstract: 1 分子力实验 高中物理课本中有关分子力的小实验,其表述是:用细线把很干净的玻璃板吊在弹簧秤下面,记下弹簧秤的示数.使玻璃板水平接触水面,然后稍稍用力向上拉玻璃板,如图1所示,弹簧秤的示数有什么变化?解释产生这个变化的原因?笔者通过多次实验难以观察弹簧秤的示数变化,并且不能准确测量分子力的大小.
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