Meteor will sound even seems unheard of, but it is a fact!
Isidor Li Kuer is one for the town, located in Russia's vast Siberian plains. It was a cold winter night many years ago, the city's streets filled with snow. When this piece over snowy starry Sky, surrounded by silence.
Suddenly, from somewhere in the Sky, came the shrill cry Liebo sound. People eagerly looking, I saw a bright meteor scatter with golden light, like an arrow in the passing sky. Meteor leaving a long, shiny track. At the same time, kind of like the sound Liebo disappeared, and the town's snowy night and return to silence.
It is not strange for a meteor, but it makes people feel a little puzzled: Isidor Li Kuer people first heard the strange sound, then saw the meteor, which in the end is how it happened? As we all know, after the meteor entered the atmosphere at a rapid pace, and dramatic air friction, ball quickly burning fireball. The vast majority of meteors in one thousand meters of altitude 60-130 had burned out, only a handful of the 20-40 km altitude at only burn. And the sound propagation velocity in the atmosphere is 330 meters per second, so the transfer from the high place into our ears for at least 1 minute, to be more accurate to say after 3-4 minutes. The problem is that when a meteor across the sky at the same time, people hear the shrill sound it emitted. It is like seeing the same time I heard thunder and lightning, indicating that this mine will fall on your side. Is this meteor actually fly off the top of your head, but tens of meters of air past it? It is obviously impossible!
Although many people believe that the meteor was seen and heard at the same time completely impossible, but researchers around the world have accumulated such materials is increasing, many annals have similar records. For researchers a strange phenomenon, the famous Russian scientist Professor 德拉韦尔特 a large collection of unusual sounds mixed with the information and give this strange meteor meteor played a precise name: electro-acoustic meteor. Professor 德拉韦尔特 finishing in the electro-acoustic record meteors table, there is an interesting paragraphs reads: December 1, 1706, a resident of the city of Magnitogorsk in the topo meteor flying, heard a shrill The "rustling" sound ...... August 10, 1973, kangaroo Shake Fu Omsk province see the "dark night sky suddenly flashed a white lightning, surrounded shine bright as day. meteor flying in During the 15-18 seconds, until you can hear the loud sound, like a giant eagle swooped down from a height of same.
When August 6, 1938, pilots Kaxieyefu saw a bright orange sky meteor in Omsk, "it flew halfway, came the shrill 'creaking' sound, like a pieces of starvation in the dry axle turn. "
Interestingly, when the famous Tunguska meteorite and 锡霍特阿林 meteorite fall, many witnesses have heard noises like birds and bees flying wings hum drum. These unusual sounds to be heard before people traveled a distance of about 50-200 kilometers, can reach up to 420 kilometers, "normal" voice about 21 minutes to go through in order to send to, in fact, can not wait until they reach our ears, it will decay and even gone on the road. May be surprising is that, in many cases, electro-acoustic meteor "signal" even earlier than the meteor itself first appeared. Witnesses often hear the sound after, Mother looked, only to see the emergence of a meteor air.
Witnesses to describe the sound of a meteor is also diverse and even strange - humming, rustling, chirping sound of rumbling, tingling sound of gurgling sound, the sound of boiling water, rocket shells whistling bullets flying overhead, and frightened bird sound from the flap, flapping sound of birds flew, puff sound when welding, Chi Chi sound of burning gunpowder, crackling sound, air impact sound, when steel hardened and broken twigs sound ...... most as people find it difficult to understand is this: Some people are able to hear the sound of a meteor, while others are heard nothing. For example when the February 1, 1934 a meteor flew Germany, 25 by 10 witnesses while the meteors appear to hear a chirping sound, and the rest is called a meteor "silent". There is also a report said, October 4, 1950, in the event of a meteor Missouri, only the children heard the howling was issued when the meteor flying. Is simply incredible! Although scientists have recognized the phenomenon of electro-acoustic meteor is an undeniable fact that an objective reality, but it has not solved the secret. Some experts believe that the answer to all this is that the electromagnetic waves emitted by the meteor flying. These electromagnetic wave propagation speed of light, some people's ears can live in some ways we do not yet know to which electromagnetic oscillations into sound, the way the conversion varies, everyone heard the voice of nature is not the same. But for many people, in addition, they have no such "Rocks" was. Scientists have done a test, using high-power high-frequency transmitter 300 meters from the high-frequency radio waves emitted outward subjects, and they have heard the buzz fingertips the sound and beat sound. But participants stressed that these sounds as if from the "inside the head" sent to, but electro-acoustic sound of a meteor is a clear "foreign property" and almost normal ears can feel. This suggests the hypothesis that electromagnetic waves are also difficult to justify the Department, visible to reveal the causes of this mystery is not easy. Voice of the formation mechanism of meteor exactly how is still a mystery. |
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