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In this video, we show you the real wetting process of Wilhelmy plate method for measurement of surface tension. This video was recorded by high speed camera with speed about 180FPS. And total wetting time is about 0.043s. From video, you can find out that: first, contact angle between plate and liquid is not zero as classical Wilhelmy plate method described. Secondary, buoyancy must be existed at area that surrounded by menisci. USA KINO has developed a new generation Wilhelmy plate method that based on wetting speed and Young-Laplace equation fitting method to get higher precision of surface tension. It is the world's first technology in the world. Visit http://www.uskino.com to find more information about USA KINO's surface tensiometer and contact angle meter, contact angle goniometer.
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MainPro : contact angle,contact angle meter,contact angle goniometer,surface tension,surface tensiometer
