Beginning of Essay
My problem was to find out how to test or measure . I think the reason of some of the force in is cohesion and gravity. is the condition existing at the free surface of a liquid, resembling the properties of an elastic skin under tension. The tension is the resu ....

Middle of Essay
.... forms an almost round ball when a small quantity is placed on a horizontal surface. The near-perfect spherical shape of a soap bubble, which is the result of the distribution of tension on the thin film of soap, is another example of this force; surface tension alone can support a needle placed horizontally on a water surface. Surface tension depends mainly upon the forces attraction between the particles within the given liquid and also upon the gas, solid, or liquid in contact with it. The molecules in a drop of water, for example, attract each other weakly. Water molecules well inside the drop may be thought of as being attracted equally in a ....