1. Discussion on the measurement of the surface tension coefficient by the pull-off method
- Author
-
Qian Sun, Jun Qian, Guan-nan Liu, Chun-ling Zhang, and Lei Tang
- Subjects
Systematic error ,Physics ,Surface tension coefficient ,Dynamometer ,General Physics and Astronomy ,Mechanical engineering ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Pull-off ,Spring (device) ,0103 physical sciences ,Line (geometry) ,010306 general physics ,0210 nano-technology - Abstract
A simple experiment for measuring the surface tension coefficient is proposed, which is well suited for teaching and learning the behavior of liquids in typical student laboratories. It is based on the pull-off method and the dynamometer used is the Jolly balance. The experiment requires inexpensive equipment but the methods allow for serious analysis of possible systematic errors, such as the impact of the state of the spring and wire on the experimental results, and the unusual movement of the engraved line on the mirror when pulling up the water film.
- Published
- 2016