The occurrence of dreams is actually related to life activities to a certain extent. It is a multiple effect of psychological and physiological influences. When human beings are sleeping, the body still maintains the most basic life activities, and our brain is no exception. Although it is in a dormant mechanism as a whole, some brain cells are still in an active state. It is this part The activity of cells creates the dream state during sleep.
Under normal circumstances, dreaming while sleeping is a normal thing, but the manifestation of excessive dreams during sleep caused by some factors must be taken seriously. The reasons for dreaminess during sleep can be divided into two points, namely cerebral cortex nerve excitement and physical factors. Dreaming is something that everyone does every day, and anything can happen in a dream. The invisibility and variability of dreams also bring a mysterious filter to the existence of dreams. Therefore, everyone is very curious about dreams, especially when there are some troublesome dreams, everyone will try to interpret them.
Dream that the wind is strong but the windmill does not turn: Today you are easily persuaded by other people’s words and may do something that is detrimental to your own interests. Pay more attention.
Students dreamed that the wind was strong but the windmill did not turn: This time the results were very good. My classmates have asked you for advice. In fact, it is just hard work. You must continue to maintain it. .
A businessman dreams about a strong wind but the windmill does not turn: It is a sign of losing money. It may be that the business is going too smoothly and makes you take it lightly. Problems will appear suddenly.
A worker dreams of a strong wind but a windmill that doesn’t turn: Pay attention to safety when attending a party organized by colleagues. If there are people who have ill intentions towards you, it is best not to drink.
The couple dreamed that the windmill did not turn when the wind was strong: You will be the rock and I will be the reed. Your unwavering love will have good results.
Singles dream of a strong wind but the windmill does not turn: Recently, your elders have been trying to arrange a blind date for you, but you have your own ideas about love and marriage, and the elders are afraid I'm going to be disappointed.
Popular Science: Why do people dream?
The occurrence of dreams is actually related to life activities to a certain extent. It is a multiple effect of psychological and physiological influences. When human beings are sleeping, the body still maintains the most basic life activities, and our brain is no exception. Although it is in a dormant mechanism as a whole, some brain cells are still in an active state. It is this part The activity of cells creates the dream state during sleep.
Many people may have discovered in their daily lives that strong images, sounds or things that they have left during the day can easily appear in their dreams. This isBecause these things are stored in the brain as memories, they are difficult to forget.
Because everyone’s work, thoughts, emotions, life and hobbies are more or less different, and their views and opinions on things are different, so everyone’s dreams are also different. Not all the same.
Not just people, some animals also dream.
In the minds of many people, everyone thinks that dreaming is a hint, perhaps reminding us of something, and they think that only humans can dream.
Dreaming is mainly due to the fact that some parts of the cerebral cortex are relatively excited during sleep, and related dreams will appear at this time.
So many mammals also dream, such as squirrels, kittens, puppies, elephants and other animals, and birds also have some short dreams.
The rotating thing that generates electricity on the grassland is called a wind vane or a windmill
Principle of power generation
Convert the kinetic energy of the wind into mechanical kinetic energy, and then convert the mechanical energy into For electric kinetic energy, this is wind power. The principle of wind power generation is to use wind power to drive the windmill blades to rotate, and then use a speed increaser to increase the speed of rotation to prompt the generator to generate electricity.
According to current windmill technology, power generation can begin at a breeze speed of approximately three meters per second (the degree of breeze). Wind power is becoming a craze around the world because it does not require the use of fuel and does not produce radiation or air pollution.
Due to the unstable air volume, the wind turbine outputs alternating current of 13 to 25V, which must be rectified by the charger, and then the battery is charged, so that the electrical energy generated by the wind turbine is converted into chemical energy. . Then use an inverter power supply with a protection circuit to convert the chemical energy in the battery into AC 220V mains power to ensure stable use.
Extended information:
1. Horizontal axis wind turbine, the rotation axis of the wind wheel is parallel to the wind direction;
2. Vertical axis wind turbine, the rotation of the wind wheel The axis is perpendicular to the ground or the direction of airflow.
Advantages:
1. Clean and good environmental benefits;
2. Renewable and never exhausted;
3. Infrastructure The cycle is short and can be constructed on land or at sea;
4. The installed capacity is flexible and the operation and maintenance costs are low.
Baidu Encyclopedia - Wind Power
The rotating ones that generate electricity on the grassland are called windmills.
First of all, we must make one point clear. What is turned by the wind is not the generator, but the windmill, or wind turbine. Then turn on the generator.
How to turn a windmill is actually not a very complicated thing. Windmills have blades, like airplane wingsleaves. Because the blade has a certain angle of attack. After the wind flows over the blade, the flow speed will be different due to the different lengths of the two ends of the blade. There is a theorem in physics. The wider the speed of the fluid, the lower the pressure will be. Therefore, due to the different gas flow speeds on both sides, a gap is formed on one side. When the pressure is high and the pressure is low on one side, the windmill is spinning.