What kind of phenomenon does this strange flow of water seem to believe?

Since appearing on the net last week, the animation of a waterline that looked like "magic" came out of the faucet, and the netizens were extremely excited and didn't understand what happened.

As you can see in the picture, initially the water is very quiet and smooth, as if it is frozen or it is a large glass tube. But when you really have a hand to touch it, you suddenly realize that it is a flowing water.

It's not magic at all, this is an interesting physical phenomenon.

Called the class flow , occurs when the water flows in parallel without division between those classes.

This flow occurs when the flow is small, the solution carries high viscosity and slow flow. In the case of water, the flow properties can be achieved by increasing the water pressure.

According to the theory that has been proposed, the flow of water in the image above will flow out with a speed, pressure and many other characteristics of the water flow adjusted at a perfectly constant value.

Of course, that perfection is interrupted when you put a finger in it.

That perfection is interrupted when you put a finger in it.

In contrast to the flow of turbulent currents (flowing blood, flow of lava or ocean currents or air currents is an example of turbulent flow).

Here is the difference between the two types, with the upper layer flow and turbulent flow below:

The difference of turbulent flow and class flow.

As you can see, the flow is extremely stable, so stable that it is hard to see which direction it is flowing without the display color. The chaotic line below has the same name as its name.

And that is the explanation for the interesting image that you have seen today, not magic or not a stream of water frozen in some way, it is the fluid dynamics that are fooling the market. Your senses.