Aurora is produced by high-energy particles (electrons and protons) outside the atmosphere hitting atoms in the upper atmosphere. This interaction often occurs in the area around the earth's magnetic pole. It is now known that charged particles, as a part of the solar wind, are captured by the earth's magnetic field when they reach the vicinity of the earth, and make them fall towards the magnetic pole. They collide with oxygen atoms and nitrogen atoms, knocking out electrons and turning them into excited ions. These ions emit radiation with different wavelengths, producing the characteristic colors of aurora such as red, green or blue. At the peak of solar activity, the aurora sometimes extends to the mid-latitude zone. For example, in the United States, the Northern Lights can be seen south of 40 degrees north latitude. Aurora has many shapes, such as curtain, arc, band and ray. The arc-shaped aurora with uniform light emission is the most stable shape, which sometimes lasts for several hours without obvious change. However, most other shapes of aurora usually change rapidly. The contour of the lower edge of arc and folded aurora is usually more obvious than that of the upper end. Finally, the aurora recedes to the polar regions, and the glow gradually disappears in the diffuse white sky. The mechanism that causes the dynamic change of aurora is still completely clear.
Among the various forms of energy created by the sun, such as light and heat, one kind of energy is called "solar wind". This is a powerful stream of charged subatomic particles, which can cover the earth. The solar wind flows around the earth over the earth and hits the earth's magnetic field at a speed of about 400 kilometers per second. The magnetic field deflects the particle flow to the earth's magnetic pole, thus causing the charged particles to chemically react with the upper atmosphere of the earth to form aurora. What is formed in the Antarctic region is called Antarctic light. This phenomenon can also be seen in the Arctic, commonly known as the Northern Lights.
Most auroras appear 90 ~ 130 km above the earth. But some auroras are much higher. 1959, the height measured by the Northern Lights at one time was 160 km, and the width was over 4800 km. City lights and high-rise buildings on the horizon may prevent us from seeing the aurora, so the best aurora scene can only be observed in the open areas of the countryside. In Churchill, Canada, you can see the aurora 300 nights a year; In Florida, you can only see it four times a year on average. Mohe in the northernmost part of China is also a good place to watch the aurora.
/kloc-in the middle of the 8th century, scientists from a geophysical observatory in Sweden found that when the observatory observed the aurora, the compass pointer on the ground would change irregularly, with the change range as much as 1 degree. At the same time, a similar phenomenon was recorded at the geomagnetic station in London. Therefore, they believe that the appearance of aurora is related to the change of geomagnetic field. It turns out that the aurora is the result of the interaction between the solar wind and the earth's magnetic field. The solar wind is charged particles ejected by the sun. When it blows over the earth, it will be affected by the earth's magnetic field. The earth's magnetic field is shaped like a funnel, with its tip facing the north and south poles of the earth, so charged particles emitted by the sun settle along the "funnel" of the earth's magnetic field and enter the polar regions of the earth. The upper atmosphere of the poles, bombarded by the solar wind, will glow and form aurora. The upper atmosphere is composed of many gases, and the front colors of light emitted by gases with different elements are different after being bombarded. For example, when oxygen is excited, it emits green light and red light, when nitrogen is excited, it emits purple light, and when argon is excited, it emits blue light, so the aurora appears colorful and varied.
Scientists have learned that the earth's magnetic field is asymmetric. Driven by the solar wind, it becomes a "streamline". That is to say, the magnetic field lines towards the sun are greatly compressed, but in the opposite direction, an earth magnetic tail shaped like a comet tail is pulled out. The length of the magnetic tail is at least 1000 of that of radius of the earth. Due to the coupling effect with the interplanetary magnetic field in the sun-earth space, the shape of the two poles of the deformed earth's magnetic field has become a narrow polar region with weak magnetic field strength. Because plasma has the characteristic of "freezing" magnetic field lines, solar wind particles can't cross the earth's magnetic field, but can only enter the earth's magnetic tail through the pole tip. When the solar activity changes dramatically (such as flare explosion), geomagnetic substorms are often caused. So these charged particles are accelerated and shot into the earth from the polar regions along the magnetic field lines. & gt
Question 2: How is the aurora produced? Where and when can I buy it? You should see it when you go to the North Pole.
Question 3: How big is Tong Hu? Tonghu profile valve.
Tong Hu (Tong Hu) 26 1 year 1.40- 1.70m A blood type1kloc-0/0/October 20th China training ground was born: Five old bees stunt: Bailongba, Lushan Mountain.
Question 4: How is the aurora formed? So that's it. What causes the aurora to appear in the high magnetic latitudes of the earth? This is a colorful luminous phenomenon. Aurora of the earth is caused by the high-energy charged particle flow (solar wind) of the earth's magnetosphere or the sun, which excites (ionizes) molecules or atoms in the upper atmosphere. Aurora has three conditions: atmosphere, magnetic field and high-energy charged particles. All three are indispensable. Aurora is more than just.
Question 5: What is the principle of aurora formation? When the sun releases a stream of high-energy plasma particles at a speed of 300 to 1200 km per second, it passes through the solar system and reaches the earth's sky, interacting with the earth's magnetic field, and some particles are dragged into the ionosphere of the earth's atmosphere (about 60 to 600 km from the earth's surface), forming a foggy plasma along the magnetic field lines. When particles collide with each other in the ionosphere, they are excited to varying degrees. This kind of beauty mostly appears in the north and south poles (the region with the strongest magnetic field on the earth), hence the name Aurora.
Question 6: How is the aurora formed? Aurora has been known for at least 2000 years, so it has been the theme of many myths. In the early Middle Ages, many people thought Aurora was a warrior riding a horse across the sky. In the Arctic, Inuit believe that the aurora was created by God to light the way for the recently dead. With the progress of science and technology, the mystery of aurora is more and more known to us. It turns out that this beautiful scenery is the work of cooperation between the sun and the atmosphere.
Aurora is produced by high-energy particles (electrons and protons) outside the atmosphere hitting atoms in the upper atmosphere. This interaction often occurs in the area around the earth's magnetic pole. It is now known that charged particles, as a part of the solar wind, are captured by the earth's magnetic field when they reach the vicinity of the earth, and make them fall towards the magnetic pole. They collide with oxygen atoms and nitrogen atoms, knocking out electrons and turning them into excited ions. These ions emit radiation with different wavelengths, producing the characteristic colors of aurora such as red, green or blue. At the peak of solar activity, the aurora sometimes extends to the mid-latitude zone. For example, in the United States, the Northern Lights can be seen south of 40 degrees north latitude. Aurora has many shapes, such as curtain, arc, band and ray. The arc-shaped aurora with uniform light emission is the most stable shape, which sometimes lasts for several hours without obvious change. However, most other shapes of aurora usually change rapidly. The contour of the lower edge of arc and folded aurora is usually more obvious than that of the upper end. Finally, the aurora recedes to the polar regions, and the glow gradually disappears in the diffuse white sky. The mechanism that causes the dynamic change of aurora is still completely clear.
Among the various forms of energy created by the sun, such as light and heat, one kind of energy is called "solar wind". This is a powerful stream of charged subatomic particles, which can cover the earth. The solar wind flows around the earth over the earth and hits the earth's magnetic field at a speed of about 400 kilometers per second. The magnetic field deflects the particle flow to the earth's magnetic pole, thus causing the charged particles to chemically react with the upper atmosphere of the earth to form aurora. What is formed in the Antarctic region is called Antarctic light. This phenomenon can also be seen in the Arctic, commonly known as the Northern Lights.
Most auroras appear 90 ~ 130 km above the earth. But some auroras are much higher. 1959, the height measured by the Northern Lights at one time was 160 km, and the width was over 4800 km. City lights and high-rise buildings on the horizon may prevent us from seeing the aurora, so the best aurora scene can only be observed in the open areas of the countryside. In Churchill, Canada, you can see the aurora 300 nights a year; In Florida, you can only see it four times a year on average. Mohe in the northernmost part of China is also a good place to watch the aurora.
/kloc-in the middle of the 8th century, scientists from a geophysical observatory in Sweden found that when the observatory observed the aurora, the compass pointer on the ground would change irregularly, with the change range as much as 1 degree. At the same time, a similar phenomenon was recorded at the geomagnetic station in London. Therefore, they believe that the appearance of aurora is related to the change of geomagnetic field. It turns out that the aurora is the result of the interaction between the solar wind and the earth's magnetic field. The solar wind is charged particles ejected by the sun. When it blows over the earth, it will be affected by the earth's magnetic field. The earth's magnetic field is shaped like a funnel, with its tip facing the north and south poles of the earth, so charged particles emitted by the sun settle along the "funnel" of the earth's magnetic field and enter the polar regions of the earth. The upper atmosphere of the poles, bombarded by the solar wind, will glow and form aurora. The upper atmosphere is composed of many gases, and the front colors of light emitted by gases with different elements are different after being bombarded. For example, when oxygen is excited, it emits green light and red light, when nitrogen is excited, it emits purple light, and when argon is excited, it emits blue light, so the aurora appears colorful and varied.
Scientists have learned that the earth's magnetic field is asymmetric. Driven by the solar wind, it becomes a "streamline". That is to say, the magnetic field lines towards the sun are greatly compressed, but in the opposite direction, an earth magnetic tail shaped like a comet tail is pulled out. The length of the magnetic tail is at least 1000 of that of radius of the earth. Due to the coupling effect with the interplanetary magnetic field in the sun-earth space, the shape of the two poles of the deformed earth's magnetic field has become a narrow polar region with weak magnetic field strength. Because plasma has the characteristic of "freezing" magnetic field lines, solar wind particles can't cross the earth's magnetic field, but can only enter the earth's magnetic tail through the pole tip. When the solar activity changes dramatically (such as flare explosion), geomagnetic substorms are often caused. So these charged particles are accelerated and shot into the earth from the polar regions along the magnetic field lines. & gt
Question 7: What is the principle of aurora formation? When the sun releases a stream of high-energy plasma particles at a speed of 300 to 1200 km per second, it passes through the solar system and reaches the earth's sky, interacting with the earth's magnetic field, and some particles are dragged into the ionosphere of the earth's atmosphere (about 60 to 600 km from the earth's surface), forming a foggy plasma along the magnetic field lines. When particles collide with each other in the ionosphere, they are excited to varying degrees. This kind of beauty mostly appears in the north and south poles (the region with the strongest magnetic field on the earth), hence the name Aurora.
Question 8: How big is Tong Hu? Tonghu profile valve.
Tong Hu (Tong Hu) 26 1 year 1.40- 1.70m A blood type1kloc-0/0/October 20th China training ground was born: Five old bees stunt: Bailongba, Lushan Mountain.
Question 9: How is the aurora produced? Where and when can I buy it? You should see it when you go to the North Pole.