Surface tension is the tendency of fluid surfaces to shrink into the minimum surface area possible. Surface tension allows insects (e.g.water striders), usually denser than water, to float and slide on a water surface.
At liquid–air interfaces, surface tension results from the greater attraction of liquid molecules to each other (due tocohesion) than to the molecules in the air (due to adhesion).
水滴为什么会去球形的? 水滴为什么会去球形的?表面张力是液体表面收缩到可能的最小表面积的趋势。表面张力使通常比水密度更大的昆虫(如水足虫)能够在水面上漂浮和滑行。
在液-气界面,表面张力是由于液体分子对彼此的吸引力(由于内聚力)大于对空气中分子的吸引力(由于粘附力)。
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