The modern physicist explains the phenomenon as due to surface-tension of the fluid.
Phenomena arising from the Variation of the surface-tension.
It assumes the form of a sphere under the action of surface-tension alone.
Hence any other liquid if mixed with water diminishes its surface-tension.
The idea of surface-tension introduced by Segner had a most important effect on the subsequent development of the theory.
During the early part of the splash the surface-tension is more important than gravity in checking the rise of the walls.
The surface-tension also being smaller, the less is the abatement of velocity on account of work done in extending the surface.
The free portions of the surface then assume new forms depending on the equilibrium of surface-tension.
Quincke has determined the surface-tension of a great many substances near their point of fusion or solidification.
This tendency of the surface to contract itself is called the surface-tension of liquids.
surface tension n.
A property of liquids arising from unbalanced molecular cohesive forces at or near the surface, as a result of which the surface tends to contract and exhibit properties resembling those of a stretched elastic membrane.
A measure of this property.
surface tension |
A property of liquids such that their surfaces behave like a thin, elastic film. Surface tension is an effect of intermolecular attraction, in which molecules at or near the surface undergo a net attraction to the rest of the fluid, while molecules not near the surface are attracted to other molecules equally in all directions and undergo no net attraction. Because of surface tension, the surface of a liquid can support light objects (such as water beetles on the surface of a pond). Surface tension is responsible for the spherical shape of drops of liquid; spheres minimize the surface area of the drop and thus minimize surface tension. See also capillary action, meniscus.