-
Anonymous users2024-02-12The convergence effect caused by the deflection of electrons from the sun approaching the geomagnetic field and the concentration of the magnetic poles in a spiral. In order to pass through the discharge of the extremely thin and coldest layer of the high atmosphere, it causes a magnificent luminescence phenomenon in the atmosphere. The shape has arches, bars and mist, etc., and the states range from beating, flickering to **.
Auroras are usually white to green, red, yellow, blue, purple or pink in color and last from a few hours to a few days.
-
Anonymous users2024-02-11The cause of this is the action of energetic particles (electrons and protons) from outside the atmosphere that hit atoms in the upper atmosphere. This interaction often occurs in the region around the Earth's magnetic poles. It is now known that charged particles, which are part of the solar wind, are captured by the Earth's magnetic field when they reach the vicinity of the Earth and cause them to fall towards the magnetic poles.
They collide with atoms of oxygen and nitrogen, knocking away electrons and turning them into excited ions, which emit radiation of different wavelengths to produce the characteristic colors of the aurora of red, green, or blue. At the height of solar activity, the aurora sometimes extends into the mid-latitudes, for example, in the United States, where the Northern Lights have been seen from 40 degrees north to south. Auroras come in a variety of shapes such as glowing curtains, arcs, bands, and rays.
The evenly glowing aurora is the most stable shape and sometimes lingers for hours without noticeable changes. However, most other shapes of aurora usually always show rapid changes. The lower edge of the curved and folded auroras are usually more pronounced than the upper ends.
The aurora eventually receded towards the earth's poles, and the glow rays gradually disappeared into the diffuse white light sky. The mechanism that causes the dynamic changes in the aurora is still fully understood.
Among the forms of energy created by the sun, such as light and heat, there is one type of energy that is called"Solar wind"。This is a powerful stream of charged subatomic particles that can cover the Earth, and this solar wind flows around the Earth above the Earth, hitting the Earth's magnetic field at a speed of about 400 kilometers per second, and the magnetic field deflects the flow of particles towards the Earth's magnetic poles, causing the charged particles to chemically react with the Earth's upper atmosphere to form auroras. The formation in the Antarctic region is called the Australis Aurora.
This phenomenon can also be seen in the Arctic region, commonly known as the Northern Lights.
-
Anonymous users2024-02-10Auroras are caused by a stream of charged particles from the sun entering the earth's magnetic field and converging high in the sky near the north and south poles of the earth.
The North Pole and the South Pole as tourist destinations, because these two places will have beautiful aurora lights at one time, this is an attraction that attracts people. So how are the auroras formed?
01 It 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.
02 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.
03 Modern physics has a detailed description of the principle of aurora, and the aurora on the earth is caused by the luminescence caused by charged energetic particles from the magnetosphere and the solar wind being guided into the earth's atmosphere by the geomagnetic field and colliding with atoms in the upper atmosphere (thermosphere). Auroras are not only found on Earth, but also on other planets in the solar system that have magnetic fields.
04 According to research on the distribution of auroras, the shape of the aurora region is not a ring centered on the geomagnetic pole, but an oval shape. The spectral line range of the aurora is about 3100 6700 angstroms, of which the most important spectral line is the 5577 angstroms oxygen atom green line, which is called the aurora green line.
05 Most auroras occur 90-130 kilometers above the Earth. In 1959, a Northern Lights measured at an altitude of 160 kilometers and a width of more than 4,800 kilometers. But some aurora lights are much higher, reaching heights of more than 560-1000 kilometers.
The legendary goddess Aurora, who rules the dawn of the Northern Lights.
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: >>>More
There is a little girl who misses her deceased mother very much, and cries sadly every night, and one day she dreams of her grandmother who has been dead for a long time, and the little girl asks her grandmother how she can see her mother, and her grandmother tells her that after death, she goes to heaven, in fact, she is still the same as when she was in the world, she likes to gather together to play football in the winter night, and when the ball is kicked around, it becomes the changing and swaying aurora in the night sky, at this time you just need to whistle, the aurora will get closer and closer, and you can see the mother who is playing with the ball, But don't get too close, as you'll be injured by a soccer ball made by a frozen walrus head. The little girl then asked, if the aurora kept coming close, how could it be told to go back? My grandmother said that as long as you rub your fingernails against each other to make a sound, the aurora will recede.
No. Light is, by its very nature, an electromagnetic wave that covers a fairly wide range (from X-rays to the far infrared) of the electromagnetic spectrum, only at a shorter wavelength than ordinary radio waves. The visible light that the human eye can see with the naked eye is only a part of the entire electromagnetic spectrum. >>>More