Eddies in the ocean are caused by many reasons, such as the density of seawater, the distribution of wind belts, and changes in seafloor topography. But another point is credible, which is that the sea water will not be lost. Even if the seawater evaporates, it will still rain to compensate. It's just a transfer and transformation of energy. Just like when an earthquake occurs in one place, its energy will appear in the form of tsunamis and other forms elsewhere.
The left vortex in the northern hemisphere
If everyone filled the bathtub with water, removed the stopper and observed carefully, there might be a lot of discussion due to the different results observed. . But in the northern hemisphere, left rotation is generally more common. In fact, when the water comes out, there is a tendency or an influence to make it turn to the left. In short, there is a forcenatural with this effect in all bathtubs in the northern hemisphere.
In 1962, Professor Shepiro, chairman of the Department of Mechanical Engineering at the Massachusetts Institute of Technology, conducted a contemporary representative study of water in the bathtub. He wasn't using a regular bathtub in a regular bathroom. Nor was he satisfied with ordinary bath water. Because if this is the case, various unfavorable factors will distort the experimental results, thus masking the existence of natural influences. For example, if the water in the bathtub was swirling slightly before the stopper was removed, that could be a bad thing. Additionally, even if the water is completely still, it will be heated unevenly because one end of the tub is hot and the other cold. Additionally, wind blowing under the door can create tiny swirls on the water.
To avoid all these inconveniences, Professor Shepiro uses a huge saucer-shaped container. It was 6 feet long in diameter but only 6 inches deep, with a small 3/8 inch diameter hole cut in the center. With great effort, he filled the container with water. It goes without saying that the wind blowing under the door should not blow over the water. In order to prevent the water surface from being partially heated, it is also necessary to prevent direct light from illuminating it.
What is particularly important here is that the water must be put away 24 hours before the start of the experiment. After taking these precautions, from the start of the experiment, the water immediately flowed out by rotating counterclockwise. Professor Shepiro's laboratory is located in Watertown, Massachusetts, USA, which means it is in the northern hemisphere. Experiments in the Southern Hemisphere and the Equator
Two years later, Dr.A. M. Beeny, a special fellow of the Royal Society, decided to use a cylinder 5 feet in diameter and 3 inches deep in the engineering laboratory at Cambridge University. Try it in the water tank to see if you can get the same results as Professor Shepiro. However, he failed from the start. Less than three hours after the water subsided, things started to go wrong. The installation of special regulating devices on the drain pipes has led to undesirable consequences. The water supplied by the city water pipes was foamy and remained so even after 24 hours. Additionally, the wind blows from the ceiling space above the sink. When the weather is cold and icy, water naturally turns. After seeing this, Dr. Beeny lost all hope in this first experiment.
During his second preparation, he still tried his best to release the water without any interference.external influences. In order to prevent dust and wind from entering the door gap, the sink is always covered with two polyethylene covers. To understand the conditions inside the sink, look through the space between the two covers. Due to concerns about the heat effect in the laboratory, no electric lights are used and the laboratory relies on natural light coming from the north window.
To keep the water stable. Dr. Beeny leaves it on for at least 21 hours, sometimes up to three days. After carrying out this series of measurements, the experiment is finished. We saw exactly the same situation as above again, which completely confirmed Professor Shepiro's experience. Dr. Bini conducted 15 experiments, and each time the water was rolled in a vortex counterclockwise.
Scientists are excited because they can predict the processhate research step. Less than a year later, the experimental report from the University of Sydney in Australia was made public. Australian scientists referred to the experiment of Professor Shepiro and Dr Beeny and used a circular tank 6 feet in diameter and 9 inches deep, with a small drainage hole in the center. Instead of metal containers, they use plywood. This prevents temperature differences from occurring in different parts of the tank, minimizing the possibility of swirls forming. After preparation, as soon as the watering was finished, the five scientists used plywood to block the ventilation holes in the ceiling, then covered the plywood with a thin sheet of plastic. The sink is covered with two pieces of plywood, leaving only a narrow space for observation. They then left the room and left it for 18 hours to letthe water stabilizes. When they returned, everyone moved as quickly as possible and closed the door. So what did they see? Water always flows out of the drainage hole by rotating clockwise. In other words, it turns to the right when viewed from above.
After these dedicated scientists conducted experiments, we can say with certainty that bathtub water flows in a vortex to the left in the Northern Hemisphere and to the right in the southern hemisphere.
There is a simple hotel in Nanyuki, a small town in Kenya. However, one of its peculiarities is that the drainage hole of the bathtub is located exactly on the equator. When doing the experiment, first fill the tub with water and sprinkle a few pieces of colored paper on the water. After removing the plug, the pieces of paper did not rotate in a certain direction, but were sucked into the drain hole.