毛细现象是学生比较熟悉的物理现象。为了说明这一现象,有一个实验提供几根直径在2毫米以下粗细不同的玻璃管,将其下端浸没在水中,会发现水能沿着玻璃管内壁上升,而且越细的玻璃管,水上升的越高,说明发生毛细现象的材料,孔隙越小,水上升的越高。但在实际教学中,与教材配套的学 Capillarity is a familiar physical phenomenon for students. To illustrate this phenomenon, one experiment provided several glass tubes with different diameters below 2 mm immersed in water, and found that water could rise along the inner wall of the glass tube. The finer the glass tube, the water rose The higher the material that capillaries, the smaller the pores, the higher the water rises. However, in the actual teaching, learning materials and supporting