肥皂泡的光学和力学性质  

Optical and mechanical properties of soap bubble

作　　者：冷文秀[1] 胡家晨[2] 张鑫杰[3] 高健祎[3] 钟寿仙[1] 

机构地区：[1]中国石油大学(北京)理学院,北京102249 [2]中国石油大学(北京)化学工程学院,北京102249 [3]中国石油大学(北京)石油工程学院,北京102249

出　　处：《物理实验》2013年第2期29-33,共5页Physics Experimentation

基　　金：中国石油大学(北京)基本科研基金资助项目(No.KYJJ2012-06-27)

摘　　要：从光学、力学、热学角度对肥皂泡的基本物理性质进行了实验研究,应用光学干涉原理实现对肥皂泡折射率及厚度较精确测量,并利用受力平衡原理求体积一定的肥皂泡的质量,再利用拉脱法测量肥皂液表面张力系数,进而研究肥皂泡表面自由能和内外压强差等.Some basic physical properties of soap bubble were studied from the optical,mechanical and thermal point of view to broaden the teaching ideas of university physics experiments.The refractive index and thickness of the soap bubble were accurately measured using optical interference principle and then its mass was determined using the force balance principle.The surface tension coefficient of the soap bubble was achieved using pull-off method;the surface free energy and the pressure difference inside and outside the soap bubble were calculated.

关 键 词：肥皂泡 折射率 厚度 质量 表面张力 表面自由能 

分 类 号：O313[理学—一般力学与力学基础] O435[理学—力学]