Precise measurement of liquid viscosity and surface tension with an improved oscillating drop method.
An improved oscillating drop method was developed to measure the surface tension and viscosity of a liquid without any external forces under microgravity conditions. The combination of a drop levitation system, a laser backlight system, and a line sensor enables the properties to be measured precisely. The surface tension value from 68.9+/-4.3 mN/m to 71.8+/-4.5 mN/m and the viscosity value of 0.92x10(-3) Pa s were obtained at 23.5 degrees C for pure water. These values agreed quite well with the reported value.
Matsumoto
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Joining and Welding Research Institute, Osaka University, 11-1, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
Nakano
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Fujii
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Kamai
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Nogi
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