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Anonymous users2024-02-12This is actually a tip discharge phenomenon, a high object is equivalent to a tip, the following is some introduction about tip discharge: Under the action of a strong electric field, a discharge phenomenon that occurs in the sharp part of an object is called tip discharge, which belongs to a corona discharge. His principle is that the curvature of the sharp part of the object is large, and the power lines are dense, so the electric potential gradient is large, causing some of the gas near it to be broken down and discharged.
If the tip of the object is in the dark or the discharge is particularly strong, a light blue halo can often be seen around itNormally, air is not conductive, but if the electric field is particularly strong, the positive and negative charges in the air molecules may be "torn" apart by a strong electric field force in the opposite direction, and this phenomenon is called air ionization. Since there is a free moving charge in the air after ionization, the air can conduct electricity, and the negative charge generated by the ionization of air is a negative ion, and the charge that loses the atom is positively charged, which is called a positive ion.
For isolated conductors) When there is a charge build-up on the surface of the conductor, the charge density is related to the shape of the conductor surface. The charge density is close to zero in the concave part, small in the gentle part, and maximum in the pointed part. When the charge density reaches a certain value, the electric field generated by the charge will be so large that it will break down (ionize) the air, and the ions in the air that are opposite to the conductor's charge will neutralize with the conductor's charge, and a discharge spark will appear, and the discharge sound can be heard.
If there is a contour of the high-voltage line, a tip discharge will occur. Because it is connected to the power supply, it discharges while constantly providing the charge needed for discharge, and this discharge will continue. Lightning rods are another good example.
When the charged cloud is close to the building, the building will induce the opposite charge of the cloud, and these charges will gather to the tip of the lightning rod, and then start to discharge after reaching a certain value, so that the charge on the building will be neutralized, and the charge will never reach the charge required for the strong discharge that will damage the building. The essence of lightning is a strong discharge between two charged bodies, and a huge amount of energy is released in the process of discharge. The other end of the building is connected to the earth, and the same charge as the clouds flows into the earth.
Obviously, if the lightning rod is to work, it must ensure that the tip is sharp and the ground access is good, and a lightning rod with a damaged ground path will cause the building to suffer more damage.
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Anonymous users2024-02-11The electric charges in the cloud generate an electric field, which attracts the charges on the ground object, and these charges are concentrated at the top of the object, especially the tip, and then, accumulating to a certain extent, the electric field is too strong, and the charge in the air moves in the electric field, colliding with the air molecules, ionizing them, forming an ionic conductor of air, and a discharge phenomenon is formed in the air, and the charge at the tip is released, producing a spark. Clouds, air, objects, ground, form a wire.
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Anonymous users2024-02-10I dreamed of a very dazzling flash copy.
electricity, going on a trip to a foreign country.
If you dream of thunder and lightning in the distance, you will suffer losses and misfortunes.
When a student dreams of thunder and lightning, it is an auspicious sign that he or she can achieve excellent exam results.
When a girl dreams of thunder and lightning, it is a good omen that she will marry into a prestigious family.
When a male patient dreams of thunder and lightning, his body recovers.
When you dream of darkness after a thunderstorm, it means that disaster is coming, and it may fall on the dreamer or on the person under your protection.
If you dream that lightning can't see the road clearly from time to time and you have to walk in the dark, you will defeat your opponent and get through difficulties and misfortunes.
If you dream that you are almost injured by lightning, disaster can be avoided.
If you dream of thundering on a sunny day when you go out, it will be difficult to improve.
When a farmer dreams of lightning, there will be a drought and famine.
Intense rays of light that occur during thunder.
"Lightning" is a commonplace phenomenon for us. In summer, whenever the sky is cloudy, thunder rumbles and lightning flashes. But if you are asked, "How is lightning formed?" "It's going to be difficult. >>>More
In fact, thunder and lightning occur at the same time, and since light travels faster in the air than sound travels in the air, we will see lightning first and then hear thunder.
Electricity is a majestic and somewhat intimidating electrical discharge phenomenon accompanied by lightning and thunder. Thunder and lightning are generally generated in cumulonimbus clouds with strong convection, so they are often accompanied by strong gusts of wind and heavy rain, and sometimes hail and tornadoes. The top of the cumulonimbus cloud is generally high, up to 20 km, and the upper part of the cloud often has ice crystals. >>>More
The lightning is too far away, the sound receives many obstacles along the way, the sound is greatly weakened, it mostly depends on the medium of air, and the light can travel in a vacuum, so the sound disappears, and the light remains. That's why sometimes you only see lightning on the ground and don't hear thunder!