Why do waves appear? Detailed answer

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Why do waves appear? Detailed answer

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Why do waves appear?

If you have ever spent time on the shore of a reservoir, you probably noticed that in calm weather there are almost no waves on the water, and on a windy rainy day there are many waves.

Here's how you can explain the appearance of waves on the water. The wind creates them. A wave is a way of moving one form of energy from one place to another. Some kind of force or energy is needed to create a wave, and the wind transfers this energy to the water.

When we observe the movement of waves - successive, one after another - it seems that the water also moves forward. But if a piece of wood floats on the surface of the water, we will notice that it does not move forward with the waves. It will only appear and disappear in waves. It will only move in the presence of wind or current. What is the movement in the wave? Basically, this is the movement of water particles up and down. This movement is transmitted towards the shore. For example, if you have a rope, you can create a kind of wave along its entire length. Wave-like movements run along the entire length of the rope, but the particles of the rope do not move forward.

Near the shore, the base of the wave hits the bottom, and the movement of the wave slows down due to friction. The crest of the wave continues to move, breaking down and forming surf.

Near the shore, the waves lose their energy. Stand in the waves near the shore, and you will understand what energy they have!

In waves, water particles move up and forward, pushed by the wind. Gravity then causes them to descend and return to their original position. It is these movements of the water that make the waves move. The distance between the crests of two waves is called the wavelength, its lowest position is called the sole.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Who made the first sewing machine?

They say that some traveler, by the will of fate, ended up in one of the most remote places, remote from civilization, and there, to his great surprise, he saw a sewing machine in the home of a local leader! Somehow, the natives got it in the nearest white settlement.

Sewing means so much in a person's life that it was simply impossible not to invent some kind of machine that could sew. The only question was who could do it first. The history of the invention of the sewing machine is full of dramatic and sometimes tragic events. The first sewing machine was invented by the Englishman Thomas Saint. In 1790, he patented a machine that already had many of the features of modern machines. It was mainly intended for working with leather, but was never used, and the inventor did not derive any benefit from it.

In 1830, the poor French tailor Barthelemy Timonnier invented a sewing machine that looked even more like the modern model. It has already become practically used in France, but an angry mob of workers, who were afraid of losing their jobs, smashed the factory and broke the machines. Timonier died in poverty.

And almost at the same time in New York, Walter Hunt invented the sewing machine, which had a curved needle with an eye on the tip. This needle passed a loop of thread through the fabric, which was hooked by a second thread, forming the so-called "lockstitch". But Hunt never managed to get a patent!

The honor of obtaining a patent for the first sewing machine to come into use belongs to Elias Howe. In 1851, Isaac Singer patented his sewing machine in the United States. Between Singer and Howe, a dispute broke out about the championship, which Howe managed to win. As a result, he was able to receive deductions from almost every type of sewing machine produced at that time.

Today, of course, there are thousands of varieties of sewing machines, including special machines for sewing leather, felt hats, blankets, buttons, and many other uses.

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