What is a surface tension?
Surface tension is the strength of cohesion of liquid. This force allows the surface of the liquid to resist, to some extent, the external forces that are applied to it. It is this resistance, which allows, for example, a papping clip hovering on the surface of a glass of water, although the paper clip has a density greater than water. The surface tension varies depending on the liquid as other factors such as temperature.
The tendency of liquid shows the properties of surface tension results from the attraction of the liquid molecules for each other. Within the liquid, each molecule is surrounded by different molecules and each attracts all other surrounding molecules as well, leading to a pure zero force. However, the molecules on the surface of the liquid are not surrounded in all directions by other molecules. The molecules that are close to them are more powerful and create surface tension.
The water drops are formed due to surface tension and the surface tension also allows air to create bubbles in the liquid. Due to tOmu that the molecules on the surface of the liquid pull on other molecules on the surface will tend to form a ball in the space, and in the absence of gravity, the water drops are perfect balls. This occurs because the ball is a shape that has the smallest possible surface area for a given volume. When two small droplets collide in the absence of gravity, the attraction of molecules for other molecules tends to cause droplets to combine into a larger droplet. This tendency can sometimes be observed even in the standard gravity of the country.
The elongated shape of the drops is due to the draft of gravity on the droplets. Surface tension tends to be a very weak force, so the droplets are easily deformed by gravity or other forces such as centripetal or centrifugal forces. Some insects and even animals are caused to take advantage of this strength, even if it can be weak. In fact, water errors and small lizards called bassics rely on surface tension in water to go to it without sinking.
SurfaceThe voltage of the liquid, usually expressed as dyny % centimeter, is the amount of force needed to interrupt the surface of a particular liquid at a linear distance of one centimeter. Dyne is a unit of energy or force defined as the amount of energy needed to accelerate one gram of mass at a speed of one centimeter per second to the other. One Dyne also equals units of international standards (SI) Micro-Newton.