Why are water droplets round?

The reason why the water droplets are round is :1. There is a property of the liquid surface called surface tension, which is the mutual gravitational force between adjacent parts of the liquid surface;

2. This tension makes the surface of the liquid like an elastic sheet. Surface tension can make a liquid that is not affected by an external force form a round shape;

3. At the same time, for a certain volume of objects, the surface area of the spherical surface is the smallest;

4. And the molecules of the water droplets are always as close together as possible, so that the surface area is reduced, so that the water droplets form a circle.

1. This is caused by the force of attraction between water molecules, the surface tension of water, and atmospheric pressure. The force exerted by the atmospheric pressure on the object is equal on all sides, thus keeping the water droplets round.

2. The falling water droplets are not necessarily round because they are blocked by air molecules. Anyone who has seen high-speed photography should know that water droplets are semi-irregular, semi-regular shapes. It is said to be semi-irregular because it is not necessarily bead-shaped, and it is said to be semi-regular because it does not have water chestnut or right angles, only smooth angles.

This characteristic is caused by the force of attraction and surface tension between the water molecules.

3. The mercury droplets on the glass plate are basically spherical, because all the molecules in the thin layer on the outer surface of the mercury droplets are in a state of high potential energy. Calculations show that if the total potential energy of the molecule is minimal, the surface must be spherical.

4. If you try to eliminate the effects of gravity, for example, if you put a droplet in another liquid with the same specific gravity that does not react chemically with the droplet, or if it falls freely in a vacuum, or in the environment of weightless satellites and rockets, the droplet will have an ideal spherical shape. Spherical soap bubbles, spherical dewdrops on lotus leaves, can also be explained by the same reason.

The surface tension of water acts on (

If you go to high school, you know it: surface tension.

The surface complex tension can make the liquid that is not affected by the external force form a round shape. Because for an object with a certain volume, the surface area of the spherical surface is the largest.

DAO is small. As a result, the molecules of the water droplets always try to move closer together, so that the surface area is reduced, so that it is round, or spherical. Only in weightlessness are the water droplets truly spherical.

It is to tie the knot with water, because this is due to gravity, and the water droplets are round. In addition, water has tension, and when it comes into contact with objects, it always exists in a circle.

The tension of waterAny force that acts on the surface of a liquid, reducing the surface area of the liquid, is called liquid surface tension. The reason for this is that there is a thin layer on the surface of the liquid in contact with the gas, called the surface layer, and the molecules in the surface layer are sparser than the inside of the liquid, and the distance between the molecules is larger than that inside the liquid, and the interaction between the molecules is shown as gravity.

Just like if you want to pull the spring apart, the spring has a tendency to shrink. It is because of this tension that some small insects can walk freely on the surface of the water.

This is due to the force of attraction between the water molecules, the surface tension of the water, and the atmospheric pressure. The atmospheric pressure exerts an equal force on the body, which keeps the water droplets round. Water is irregular, but due to gravity, the water droplets appear to be round, and the surface tension makes the liquid appear round without being acted upon by an external force.

Because at a certain volume, the surface area of the sphere is the smallest. As a result, the molecules of the droplets tend to move as close together as possible, reducing the surface area, thus forming a round, or spherical, shape.

<> Surface Tension: Surface tension is the amount of energy required to increase the surface area of a liquid. Any molecule in a liquid is attracted (roughly symmetrical) by the molecules distributed around it, whereas the molecules on the surface of the liquid are only partially surrounded by other molecules, so they only exert an attraction on the inside of the liquid, thus pulling the molecules on the surface outward.

This phenomenon is known as surface tension.

On the surface of the liquid, the distribution of molecules is sparser than that of the molecules inside the liquid, and both the attraction and repulsion between the molecules are weakened, but the attraction is relatively greater than the repulsion. The mutual attraction between molecules is known as surface tension. And this is because water is a fluid, it has intermolecular forces, and the macroscopic effect of this force is to hold the water droplets together, so the water droplets are close to a circle.

But due to gravity, it can only be so small that it can't be bigger.

Surface tension of water: The attraction of air molecules to surface water molecules is less than that of internal water molecules to surface water molecules, so the resulting force on the molecule is not equal to zero, and the direction of the result is perpendicular to the interior of water, resulting in a tendency for the surface of water to shrink automatically, and this contraction force is called the surface tension of water. On the other hand, when a water droplet falls, it is only subjected to gravity, and its interior appears weightless, thus presenting a state of equilibrium of the water droplet.

Think about why a bowl of water is poured out, and we don't see it as a sphere. In fact, if the height is high enough and there is no air resistance, a basin of water will still appear as a sphere. But the reality is that there must be air resistance.

This is because our earth has gravity, and there is a direct attraction to the water molecules, the surface tension of water, and the atmosphere contains atmospheric pressure, which keeps the water droplets in the shape of a circle at the top and at the bottom.

In real life, the water droplet will deviate from the spherical shape due to gravity, and the tip of the water drop will have a small area of contact with the water outlet, and the water outlet will have an adhesion to the water droplet, resulting in the formation of a tip when falling.

Because when the water falls, gravity will appear below, and there will be a slope, so it will appear in the shape of water droplets.

This is mainly due to the surface tension of the water. Inside the water droplet, the water molecules are evenly forced, while at the junction of air and water, the gravitational pull of the water molecules is unbalanced, and the resultant force points to the inside of the water droplet, as if to pull the water inward. As a result, water droplets tend to maintain a minimum surface area, while a sphere has a minimum surface area, so the water droplets appear spherical.

This is the reason for the behavior of gravity.

The water droplets are round. Matter has a gravitational pull. The gravitational force is all directed towards the center of mass of the object.

and form an equipotential surface on the same radius around the center. In the absence of other forces, the particles of matter move towards the center due to gravity until they are supported. The result of the movement is naturally the sphere.

That is, all the particles of matter are evenly distributed on the equipotential surface.

The reason why the water droplets are round is that the surface tension can make the liquid that is not affected by external force form a circle, and the liquid surface has a property called surface tension, which is the mutual attraction between various parts of the liquid surface, which makes the surface of the water droplets have a tendency to shrink.