10 incredible things that can be done with sound
Sound waves can do incredible things with the practical application of science, art and medicine. In this collection you will find a list of ten such things.
1. Destroy the sound
The company "Orfild Labs" in Minneapolis built the quietest room in the world, it is used to test low noise (hum light bulbs, for example). The walls are completely sound-proof, but the sound level is 9 dB - it is so quiet that you can hear the sounds of their own work of internal organs. This sensory deprivation exacerbates all the senses, causing strange sensations in the body and brain. After spending a long time in this room, you run the risk of schizophrenia or acquire such strange powers, like the ability to feel the color to taste. A man can stand it no more than 45 minutes, then begin hallucinating.
2. To hide the sound of
Have you noticed that when walking through the woods at different times, such as day and night, you hear the sound a little different? If a day like all the noise merge, in the middle of the night every rustle sounded like a shot.
This phenomenon occurs when sound waves change their direction (refracted) due to temperature fluctuations during the diurnal cycle. During the day they go up, where the air temperature is lower and mainly distributed over your head, creating a zone of "acoustic shadow".
The effect is widely used by sailors in the ocean: to escape from the sound vibrations they are hiding in the area of acoustic shadow from enemy sonar.
3. Arm sound
Users are able to turn almost everything into a weapon, even a sound. «The Long Range Acoustic Device» - a device that is used for these purposes. It looks like a darkened floodlight that shoots "beam" the sound volume of about 150 decibels at a distance of tens of meters. Sonic weapons can be used to suppress riots and unrest: the device can cause severe pain and damage health. Sound guns already used in European courts to deter Somali pirates.
4. Sound as Art
Sound waves can be made visible, it is called "Cymatics". For example, if you saw the impact of sound on the tank with sand, sand and stir to create a variety of shapes.
The first who discovered this, Galileo began in 1632, the year. He noticed that if you hold on a plate with fine particles of material cutter, they take the form of parallel lines of grinding.
5. Sound killer
Theoretically, a person can kill the sound pressure, but it looks like it is not, as you imagine. What usually follows a strong explosion overpressure is called - is a huge increase in atmospheric pressure. Some explosions can cause extremely loud noise, which, however, can not be heard, because the eardrums burst at around 160 decibels. But 200 decibels is enough to break the lungs and cause internal damage.
During World War I caused the death of so many questions: because of the lack of the human body visible damage, no one could understand, from which he died. So when you see the scene in the film how the hero, cast off the explosion, easily rises and goes about his business - this is nonsense. In real life, he would have been dead and deaf.
6. Sound helps fight crime
Businessmen and representatives of authorities in some cities in the United States decided to include classical music in the subway in areas with high crime rates. It turns out that the classics can disperse the aggressive teenagers and hooligans from public places - it seems it sounds unpleasant, causing discomfort and forced to leave in search of quiet.
For example, in London in 2003, the year and a half years in the underground included classical music. During this time, vandalism and robberies have decreased by a third.
7. Turn the sound laser
The laser produces a very narrow beam of light capable of moving even in a vacuum as opposed to sound waves requiring mediation environment. The Japanese in 2010 was created audio device capable of emitting a beam of sound - phaser. Its frequency was 170 KHz, and is eight times greater than the human perception threshold. The phaser is used for medical purposes.
8. Sound treats
Device «HIFU Transducer» focuses acoustic energy and emits a tremendous amount of heat, this phenomenon can be compared with a magnifying glass, transmissive sunlight. Professor of surgery at the University of Washington, said: "With this device, you can do all the same thing as using ultrasound." For example, the device is able to "seal" pork punctured lung in two minutes. This is a huge step in the non-invasive surgery.
9. Return to the sound past
One of the most interesting areas of science is arheoakustika - the use of sound in archeology. For example, each room of your house has its own sound, depending on the availability of accessories, furniture and other items. Scientists from the University of Salfold UK decided to learn how to sound Stonehenge. Writing the reflected sound waves from Stonehenge, and then built a computer model, the researchers found that the megaliths create a reflective space, similar to the lecture hall.
10. Sound like a compass
It is known that bats and birds orient themselves in space by means of sound waves, but until recently, scientists could not figure out exactly how the birds are at a great distance the way home. In 1997, geophysicist Jonathan Hastram found that about 60 thousand pigeons are lost during the migration to England from France - the way they crossed the bass sound from the aircraft. Inaudible to the human ear, it greatly disrupted the internal compass of birds. Hagstrom saw that the birds create a unique "sound cards" for navigation, but the objects erected by man, or change their landscape can greatly confuse birds.
Sound waves can do incredible things with the practical application of science, art and medicine. In this collection you will find a list of ten such things.
1. Destroy the sound
The company "Orfild Labs" in Minneapolis built the quietest room in the world, it is used to test low noise (hum light bulbs, for example). The walls are completely sound-proof, but the sound level is 9 dB - it is so quiet that you can hear the sounds of their own work of internal organs. This sensory deprivation exacerbates all the senses, causing strange sensations in the body and brain. After spending a long time in this room, you run the risk of schizophrenia or acquire such strange powers, like the ability to feel the color to taste. A man can stand it no more than 45 minutes, then begin hallucinating.
2. To hide the sound of
Have you noticed that when walking through the woods at different times, such as day and night, you hear the sound a little different? If a day like all the noise merge, in the middle of the night every rustle sounded like a shot.
This phenomenon occurs when sound waves change their direction (refracted) due to temperature fluctuations during the diurnal cycle. During the day they go up, where the air temperature is lower and mainly distributed over your head, creating a zone of "acoustic shadow".
The effect is widely used by sailors in the ocean: to escape from the sound vibrations they are hiding in the area of acoustic shadow from enemy sonar.
3. Arm sound
Users are able to turn almost everything into a weapon, even a sound. «The Long Range Acoustic Device» - a device that is used for these purposes. It looks like a darkened floodlight that shoots "beam" the sound volume of about 150 decibels at a distance of tens of meters. Sonic weapons can be used to suppress riots and unrest: the device can cause severe pain and damage health. Sound guns already used in European courts to deter Somali pirates.
4. Sound as Art
Sound waves can be made visible, it is called "Cymatics". For example, if you saw the impact of sound on the tank with sand, sand and stir to create a variety of shapes.
The first who discovered this, Galileo began in 1632, the year. He noticed that if you hold on a plate with fine particles of material cutter, they take the form of parallel lines of grinding.
5. Sound killer
Theoretically, a person can kill the sound pressure, but it looks like it is not, as you imagine. What usually follows a strong explosion overpressure is called - is a huge increase in atmospheric pressure. Some explosions can cause extremely loud noise, which, however, can not be heard, because the eardrums burst at around 160 decibels. But 200 decibels is enough to break the lungs and cause internal damage.
During World War I caused the death of so many questions: because of the lack of the human body visible damage, no one could understand, from which he died. So when you see the scene in the film how the hero, cast off the explosion, easily rises and goes about his business - this is nonsense. In real life, he would have been dead and deaf.
6. Sound helps fight crime
Businessmen and representatives of authorities in some cities in the United States decided to include classical music in the subway in areas with high crime rates. It turns out that the classics can disperse the aggressive teenagers and hooligans from public places - it seems it sounds unpleasant, causing discomfort and forced to leave in search of quiet.
For example, in London in 2003, the year and a half years in the underground included classical music. During this time, vandalism and robberies have decreased by a third.
7. Turn the sound laser
The laser produces a very narrow beam of light capable of moving even in a vacuum as opposed to sound waves requiring mediation environment. The Japanese in 2010 was created audio device capable of emitting a beam of sound - phaser. Its frequency was 170 KHz, and is eight times greater than the human perception threshold. The phaser is used for medical purposes.
8. Sound treats
Device «HIFU Transducer» focuses acoustic energy and emits a tremendous amount of heat, this phenomenon can be compared with a magnifying glass, transmissive sunlight. Professor of surgery at the University of Washington, said: "With this device, you can do all the same thing as using ultrasound." For example, the device is able to "seal" pork punctured lung in two minutes. This is a huge step in the non-invasive surgery.
9. Return to the sound past
One of the most interesting areas of science is arheoakustika - the use of sound in archeology. For example, each room of your house has its own sound, depending on the availability of accessories, furniture and other items. Scientists from the University of Salfold UK decided to learn how to sound Stonehenge. Writing the reflected sound waves from Stonehenge, and then built a computer model, the researchers found that the megaliths create a reflective space, similar to the lecture hall.
10. Sound like a compass
It is known that bats and birds orient themselves in space by means of sound waves, but until recently, scientists could not figure out exactly how the birds are at a great distance the way home. In 1997, geophysicist Jonathan Hastram found that about 60 thousand pigeons are lost during the migration to England from France - the way they crossed the bass sound from the aircraft. Inaudible to the human ear, it greatly disrupted the internal compass of birds. Hagstrom saw that the birds create a unique "sound cards" for navigation, but the objects erected by man, or change their landscape can greatly confuse birds.
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