在讲球形液面的附加压强时,一个典型的实验如下图所示。在管子两端吹大小不等的两个肥皂泡,当中间活塞打开,两泡相通时,我们将会看到,大泡不断变大,小泡越来越小。此实验对理解Laplace公式是很有帮助的,但其成败的关键是所吹的肥皂泡要足够大,且能保持较长的时间。为达到此目的,我们对溶液的配制进行了探讨。我们用蒸馏水配制同浓度的合成洗涤剂 When talking about the additional pressure of a spherical liquid surface, a typical experiment is shown below. At both ends of the tube, two soap bubbles of different sizes are blown. When the middle piston opens and the two bubbles are connected, we will see that the bullae keeps getting larger and the vesicles getting smaller and smaller. This experiment is very helpful to understand the Laplace formula, but the key to its success is to blow the soap bubbles to be large enough, and can maintain a longer period of time. To this end, we have explored the formulation of the solution. We prepared the same concentration of synthetic detergent with distilled water