The light of the earth is a bright range that can be seen in the atmosphere nearly 2 pole when standing at the high latitudes (near Polars) with many shapes, colors and different cycles.02: 00/5: 27 Southern optical fields appear. This history is close to this phenomenon that lnuit people live near the Arctic of the earth scattered in the regions of North Canada, Greenland, Alaska and Syberia. They believed that this phenomenon was the bright streams to the earth from openings on the sky dome separating the ground with heaven. Meanwhile, the Alaska believed that the robbery was the dance of the soul of the animals
. The 8th century in front of the BC, the Greek poet Hesiod called this phenomenon with phrases like "Gloding Fire "(Blazing Sky) or" Flaming Sky Dragons "(Flaming Sky Dragons). The first person tries to explain this phenomenon scientifically aristole, a famous mathematician and astronomical HY . He said that the optical look was just the glowing clouds
Those the next century, in the middle of the Middle Ages in Europe, people tend to believe that when the optical pole appears is an omen for bad things will happen. If the optical pole suddenly appeared in the horizon at a battle, it should be stopped to avoid unforeseen things. Five 1619, Galileo Galilei (father of experimental physics, the author The first telescope ...) Be the first to find a way to explain this phenomenon. By 1622, the French philosopher Gassendi gave an optical phenomenon in the Northern hemisphere name as Aurora Borealis (meaning light north / Northern Lights), this name is still used until Now.Nam in the International Geophysics 1957 - 1958, Yasha Feldstein proposed the theory of Oval Extremely Oval, where it usually appears of extremely optical phenomenon, it is an OVEL (or ellipse) areas. Around the Earth's 2 pole with a diameter to 2,500 km and a few hundred km thick. This is a model that has been confirmed today
Our ownership and nature of our land is a strong magnetic planet, it's like a giant magnet with 2 magnetic polares located near the geographic pole planet. The lines are therefore running between the two words to form a layer of magnetic field wrapped around the earth called from the book (Magnetosphere). Days, the nuclear reactions in the sun make it radiate light to light together Other energy including lines carrying electric beads such as electrons, called the solar wind. This sun is when encountering from the earth is beaten to around, distorting the rear-level element of the earth (side Being at night), simultaneous electrons encountered from the earth's energy-based road from the Polar Song of the earth and entering the Earth's Earth atmosphere through the Oval Oval. On the atmosphere high floor (nitrogen and oxygen), stimulate and ionize them, form glowing as we know. The shape, color and both long or short cycles of the optical extreme depend on the density and energy of these electrons. Optical can have many colors, many shapes and cycles are due to quantity, density And energy carries the electrons when it rushes into the Earth's atmosphere. Optical pole can last 10, 20 minutes or even 1, 2 hours depending on the density of electrons as said. This extreme optical optical is called an optical pole interrupt, the light is light and does not appear regularly. The second ultra-optical type is almost unpecrated as diffused optical and this type is regular and continuous but very faint but very faint and can't be seen with the naked eye even on the most ideal nights. , usually when people talk about the optical extreme observation, the optical pole is interrupted. At times with magnetic storms, the Oval optics are expanded and if the optical pole is interrupted, you can observe it to tell Both in the latitude are relatively low, not too close to the North Pole as usual. This affects the intensity of optical pole on earth. The sky releases more electrons near its pole and therefore when the Earth moves to the position corresponding to the early September and early March. Optical at the pole will be the strongest in the year. Because thereby the sun's words are the most directed towards us. That's why in many astronomical or geophysical documents, you read that the optical look is often stronger than the spring and stool days While it is very weak when it is close to the dates. We can see the optical pole? Optical pole with its altitude compared to seawater surface is approximately 100 - 130 km. Therefore, in fact, even if the Oval is extremely expanded at times with storms from, people living in areas with shortcomings are too low as Vietnam, unfortunately, they cannot see this phenomenon. In Northern Hemisphere, in addition to the North Pole, the population in North Canada, Alaska, Greenland, Northern Norway, Siberia can observe this phenomenon in the winter when the North . Dịch vụ:
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