Du Noüy ring method

A du Noüy ring tensiometer. The arrow on the left points to the ring itself.

Close up of the ring drawn out of the liquid.

The du Noüy ring method is one technique by which the surface tension of a liquid can be measured. The method involves slowly lifting a ring, often made of platinum, from the surface of a liquid. The force, $F$ , required to raise the ring from the liquid's surface is measured and related to the liquid's surface tension, $\gamma$ :

单词	Du Nouy ring method
释义	Du Nouy ring method 英语百科 Du Noüy ring method The du Noüy ring method is one technique by which the surface tension of a liquid can be measured. The method involves slowly lifting a ring, often made of platinum, from the surface of a liquid. The force, $F$ , required to raise the ring from the liquid's surface is measured and related to the liquid's surface tension, $\gamma$ :
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Du Nouy ring method

Du Noüy ring method