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Surface tension is an important factor in the phenomenon of capillarity. Surface tension has the dimension of force per unit length, or of energy per unit area. [4] The two are equivalent, but when referring to energy per unit of area, it is common to use the term surface energy, which is a more general term in the sense that it applies also to ...
(σ: surface tension, ΔP max: maximum pressure drop, R cap: radius of capillary) Later, after the maximum pressure, the pressure of the bubble decreases and the radius of the bubble increases until the bubble is detached from the end of a capillary and a new cycle begins. This is not relevant to determine the surface tension. [3]
A: The bottom of a concave meniscus. B: The top of a convex meniscus. In physics (particularly fluid statics), the meniscus (pl.: menisci, from Greek 'crescent') is the curve in the upper surface of a liquid close to the surface of the container or another object, produced by surface tension.
This image is a derivative work of the following images: File:SurftensionDiagram.png licensed with PD-user-w . 2007-09-01T14:57:35Z Karlhahn 350x192 (2130 Bytes) {{Information |Description=Author: Karl Hahn Subject: Illustrative diagram of surface tension forces on a needle floating on the surface of water (shown in crossection).
In the equation, m 1 and σ 1 represent the mass and surface tension of the reference fluid and m 2 and σ 2 the mass and surface tension of the fluid of interest. If we take water as a reference fluid, = If the surface tension of water is known which is 72 dyne/cm, we can calculate the surface tension of the specific fluid from the equation.
This diagram is a retouched picture, which means that it has been digitally altered from its original version. Modifications: added red part. The original can be viewed here: Surface Tension Diagram.svg: . Modifications made by JoKalliauer.
Surface tension diagram of a liquid droplet on a solid substrate. The surface of the liquid has the shape of a spherical cap, due to Laplace pressure ...
The surface tension of a liquid directly affects its wettability. Most common liquids have tensions ranging in the tens of mJ/m 2 , so droplets of oil, water, or glue can easily merge and adhere to other surfaces, whereas liquid metals such as mercury may have tensions ranging in the hundreds of mJ/m 2 , thus droplets do not combine easily and ...