大小肥皂泡连通后的讨论与计算  

Calculation of the connecting big and small soap bubbles

作　　者：唐玄之[1] 王琦[1] 魏良淑[1] 杨宏伟[1] 

机构地区：[1]南京农业大学理学院,江苏南京210095

出　　处：《大学物理》2007年第10期20-23,共4页College Physics

摘　　要：从弯曲液面附加压强、气体状态方程以及"球缺"的有关公式等出发,对大小肥皂泡连通后的变化作了全面的阐释,导出了最后大泡半径的近似公式,还介绍了演示实验,拍得了3个泡的照片,测出了它们的半径,验证了这个近似公式.并对产生误差的原因作了分析.From the extra pressure of curved liquid surface, state equation of ideal gas and the related equations of spheroid, the connecting big and small soap bubbles is studied and the approximate equation of the radius of the final big bubble is deduced. The demonstration experiment is introduced, three different pictures of the three bubbles are taken, and the radii are measured. The approximate equation is verified and the reason of error is analyzed

关 键 词：表面张力 肥皂泡 附加压强 扩散 

分 类 号：O157.5[理学—数学]