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The aurora has left a beautiful presence in both Eastern and Western myths and legends. It's winter in the Northern Hemisphere, and it's the season to see the aurora again. At this time of the year, one of the more popular product lines sold by travel agencies that do outbound tourism business is Northern Europe, and more and more tourists go to Northern Europe to see the Northern Lights.
The beauty of the aurora is hard to refuse, and it is said that those who can see it will be lucky. Most of the aurora we see on the Internet and TV are green, but in fact, there are many colors of aurora. Let's take a look!
Aurora. <>
Aurora. What determines the color of the aurora? In fact, the content of nitrogen and oxygen in the atmosphere determines the color of the aurora, and the content of nitrogen and oxygen is closely related to altitude.
In fact, there are more than six colors of the aurora that have been confirmed so far. Depending on the altitude from high to low, they are red, yellow, pink, green, blue, and purple.
Red aurora. In general, the red aurora occurs when the solar wind reacts with oxygen at an altitude of more than 150 miles. When the red aurora appears, the sky is red and spectacular.
However, the red aurora is very rare. If you can see the red aurora, it should be someone who has good character and luck.
Yellow aurora. <>
Pink aurora. Yellow and pink aurora are also rare in nature, and it is only possible to see them when the sun is vigorously active. In fact, the yellow aurora and the pink aurora are a mixture of the red aurora and the green aurora, or the red aurora and the blue aurora.
Friends with pink girly hearts hope you have a chance to see it
The green aurora is the most common aurora you see. The Northern European aurora is also mostly green. Green aurora is usually formed by the solar wind colliding with atmospheric oxygen at an altitude of about 60 to 150 miles.
Blue auroras. <>
Purple aurora. Blue and purple aurora are only possible when the sun is vigorously active, and they are very difficult to see. These two colors of aurora are formed when the solar wind is at an altitude of 60 miles or less above the earth's surface and reacts with atmospheric nitrogen.
The purple light can easily capture the hearts of a group of girls
The aurora is a beautiful natural phenomenon, and the beauty of the aurora is stunning. At the same time, the aurora is also a precious treasure left to us by nature. Either color, it's beautiful and breathtaking. What's your favorite color of the aurora?
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So far, there have been more than six confirmed colors of the aurora, and they are red, yellow, pink, green, blue, and purple depending on the altitude at which they appear.
The color of the aurora is determined by the amount of nitrogen and oxygen in the atmosphere, which in turn is closely related to altitude. In general, red auroras occur when the plasma ejected by the sun reacts with oxygen at an altitude of more than 150 miles; Yellow and pink aurora are also rare, and are only likely to be seen when the sun is vigorously active, in fact, yellow and pink aurora are a mixture of red and green auroras, or red and blue auroras; The green aurora is the most ubiquitous of all seen and is usually formed by plasma colliding with atmospheric oxygen at altitudes of about 60 to 150 miles; Blue and purple auroras are only possible when the sun is vigorously active, and they are also very rare to see, forming when plasma is 60 miles or less above the surface and reacts with atmospheric nitrogen.
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Its natural colors are nothing more than red, green, purple, blue, white, and yellow.
The aurora is diverse, colorful, and beautiful in shape, and there is no phenomenon in nature that can compare with it. It is difficult for any colored pen to paint the dazzling light that frolicks and changes in the cold polar air. Sometimes the aurora appears for a very short time, like a festive firework flashing in the sky and disappearing without a trace; Sometimes it can shine in the sky for hours; Sometimes it's like a streamer, sometimes it's like a fire, it's like a huge screen full of colors, as if a full-dome movie is being staged, giving people a visual aesthetic enjoyment.
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The aurora seems to be mostly green and white.
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Auroras have no fixed form and different colors, with green, white, yellow, and blue colors being the majority, and occasionally a brilliant purple, which is graceful and mysterious.
Sometimes the aurora appears for a very short time, like a festive firework flashing in the sky and disappearing without a trace; Sometimes it can shine in the sky for hours; Sometimes it's like a streamer, sometimes it's like a huge screen full of colors; Some are silvery-white, like cotton wool and white clouds, solidified and unchanged.
Some aurora have a single structure, the shape is like a curved arc light, showing light green and reddish hues; Sometimes the aurora appears on the horizon, like the dawn of the morning; Sometimes the aurora is like a camellia, a fiery red; Sometimes the aurora gathers together, like curtains and curtains; Sometimes it shoots out many beams of light, like a peacock opening its screen and a butterfly wings flying.
Although scientists have a basic understanding of the aurora, there are still many difficult questions that need to be explored.
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The most common color of the aurora is green fluorescence, and there are also bright red, but the color of the aurora has long been unable to be depicted with colorful colors, according to incomplete statistics, the hue of the aurora that can be clearly distinguished has reached more than 160 kinds.
The color and intensity of the aurora also depend on the energy and number of falling particles, and the auroras that people see are mainly caused by electrons in the stream of charged particles. The deposition particles are the electron beam of the television, the Earth's atmosphere is the television screen, and the Earth's magnetic field is the electron beam-directed magnetic field. Scientists get a lot of information about the magnetosphere and electromagnetic activity in solar-terrestrial space from this large natural television.
The chance of the Aurora appearing.
Auroras are most commonly found in two annular zones near 67° north-south magnetic latitude, known as the Southern Aurora Zone and the Northern Lights Zone. The northern hemisphere is dominated by Alaska, northern Canada, Siberia, Greenland, the southern tip of Iceland and the north coast of Norway.
The Southern Hemisphere, on the other hand, is concentrated near Antarctica. It is worth mentioning that Alaska and Northern Canada near the North Pole are the best places to see the Northern Lights, and Fairbanks in Alaska has earned the reputation of "Northern Lights Capital", with more than 200 days of aurora in a year.
The above content refers to Encyclopedia-Aurora (natural phenomenon).
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It is because of the principle of refraction of light, and then most of the Northern Lights of the Divine Banquet are green, in fact, the light is originally colorful, but it comes into contact with some other bright things, and finally turns green after refraction.
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Because the green aurora is the most common, the aurora is the most energetic habit, and it is especially easy to be seen. Auroras of other colors are not easily visible.
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Aurora is an optical phenomenon released by the movement of atoms and scattered molecules in the earth's atmosphere, because when charged particles are affected by the earth's magnetic field, oxygen atoms will emit green light.
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The most common color of the aurora is green, followed by red, blue-purple, etc.
Generally speaking, the higher the latitude, the more likely you are to see the aurora, and the aurora generally occurs in winter around 67°S and 67°N. People have always associated the Northern Lights with winter, but in fact, the Northern Lights occur all year round, but they are far less bright than daylight and brightly lit city nightscapes, and if you want to see them with the naked eye, you have to wait until night.
In summer, Iceland is in a polar daylight state, and the sky is almost never dark, so naturally you can't see the Northern Lights. However, in Iceland, in addition to winter, it is possible to see the Northern Lights in autumn (late August to October) and early spring (early April). By far Reykjavík, Iceland, is by far the most affordable and accessible place to see the Northern Lights.
Aurora Observation Area:
1. Finland
In Finland, you can lie in a transparent starry sky house and watch the aurora, in a warm glass house at minus thirty or forty degrees, look up and see countless lights jumping in the night sky.
2. Alaska
Fairbanks, Alaska, is home to more than 200 days of the year, earning it the nickname "Capital of the Northern Lights."
3. Iceland
Iceland is a popular spot for observing the Northern Hemisphere due to the hail of the whole country in the Aurora Belt. The Southern Lights change at the same time as the Northern Lights (which can be seen as a mirror image of the Northern Lights). The Southern Lights can be seen at high latitudes in South America, Australia, New Zealand and Antarctica.
The above content reference: Encyclopedia - Aurora.
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Aurora has 3 colors, namely green aurora, red aurora, blue-purple aurora, and so on.
1. Green aurora.
The most common aurora color, green auroras, are often produced when charged particles collide with highly concentrated oxygen molecules in the Earth's atmosphere at altitudes of about 60 to 190 miles (100 to 300 kilometers). We also see the green aurora better than any other color because the human eye is most sensitive to the green spectrum.
2. Red aurora.
Red Aurora is a relatively rare aurora color that is often associated with intense solar activity. They occur when solar particles react with oxygen at higher altitudes, typically about 180 to 250 miles (300 to 400 kilometers). At this altitude, the concentration of oxygen is lower and is excited at a higher frequency or wavelength, making the red color visible.
Red aurora often appears on the higher edges of the display.
3. Blue-purple aurora.
Blue-violet auroras are rare colors that are produced when solar particles collide with nitrogen molecules in the Earth's atmosphere at altitudes of 60 miles or less. Blue-violet aurora usually appears in the lower part of the display.
Causes of Aurora:
The aurora appears over the high magnetic latitude of the planet and is a brilliant and colorful luminous phenomenon. Earth's auroras, on the other hand, are produced by the excitation (or ionization) of molecules or atoms in the upper atmosphere by a stream of high-energy charged particles (solar wind) from the Earth's magnetosphere and the Sun. There are three conditions for the aurora to occur:
atmosphere, magnetic fields, high-energy charged particles. All three are indispensable. Auroras are not only found on Earth, but also on some other planets in the solar system that have magnetic fields.
Polar and hail light generally only occurs at the high latitudes of the north and south poles, but the solar storm on August 1, 2010 happened to be facing the earth, and the solar wind carrying a large number of charged particles accurately "hit" the earth, interacting with the earth's magnetic field to produce a "magnetic storm", so that the beautiful northern lights can be seen in the lower latitudes such as Michigan, Denmark and the United Kingdom.
Aurora is a process of mass discharge around the Earth. Charged particles from the Sun reach the vicinity of the Earth, and the Earth's magnetic field forces some of them to concentrate along the magnetic field lines to the north and south poles. When they enter the upper atmosphere of the polar regions (the sail is greater than 80km), they collide with the atoms and molecules in the atmosphere and excite, and the light produced by the energy release forms a large circle around the magnetic poles, that is, the aurora.
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The reason why auroras have a variety of colors is because of the electronic transition.
Aurora is a brilliant and colorful luminescent phenomenon that occurs when a stream of charged particles (solar wind) from the sun enters the earth's magnetic field, and a brilliant and beautiful glow appears at night in the high altitude near the north and south poles of the earth. The rough is called the Southern Lights in the South Pole and the Northern Lights in the North Pole. Earth's aurora is produced by the excitation (or ionization) of molecules or atoms in the upper atmosphere by a stream of high-energy charged particles (solar wind) from the Earth's magnetosphere or the Sun.
Auroras often appear in the sky above the geomagnetic pole at latitude, generally in the form of bands, arcs, curtains, and radials, and these shapes are sometimes stable and sometimes change continuously. There are three conditions for the formation of auroras: the atmosphere, the magnetic field, and high-energy charged particles. All three are indispensable.
The principle of the phenomenon of the aurora:
Aurora is a process of mass discharge around the Earth. Charged particles from the Sun reach the vicinity of the Earth, and the Earth's magnetic field forces a portion of them to concentrate along the magnetic field lines to the north and south poles. When they enter the upper atmosphere of the polar regions, they collide with and excite the atoms and molecules in the atmosphere, producing light that forms the aurora.
The frequent occurrence is in the two ring-shaped regions around 67 degrees north and south latitudes, and Fairban, Alaska, has more than 200 days of aurora in a year, so it is called the "capital of the Northern Lights".
The magnetic field lines of the Earth's magnetosphere carry the energy of the solar wind into the Earth's interior, which in turn drives the formation of the geomagnetic field. In addition to the conductors of the Earth's interior, there is also the ionosphere of the atmosphere - a weakly conductive side-losing power. When the solar wind is strong, the energy of the magnetic field lines encounters the magnetic inductance of the earth's interior, and a lot of energy cannot be consumed, so an aurora is formed in the ionosphere.
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