The Surface Tension of Liquid |
A liquid is composed of a group of tiny molecules. Each molecule attracts by others in its neighborhood. When the molecules try to leave the liquid, they will be retarded by a force pulling them back. The liquid tries to retain the smallest and smoothest surfaces. The surface tension refers to the force per unit area on the surface of a liquid. This experiment uses the method by hanging and lifting a ring to measure the magnitude of surface tension of a liquid. Various liquids are selected. Difference in their surface tensions can be observed.
Video The Surface Tension of Liquid
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