用光学方法测量液体表面张力系数

An optical method for measuring tension coefficient of liquid surface

激光器光束照射在振动的液体表面上 ,表面回波对衍射光可产生干涉现象 ;扩束后的激光束入射在插有金属细丝的较大区域液面上 ,其反射光场分布近似为椭圆形的暗场 .

Raying a laser beam on a vibrate liquid surface, the surface each interferes with the diffraction light; Raying an expanded Laser beam on liquid surface of a large area on which a metal tinsel is inserted, in the field distribution of the reflected light is a dark elliptical field surrounded by a bright light field. To analyses the experiment result, the method for measuring the tension coefficient of liquid surface is obtained.