Uses of sound by Fung Eng Chu https://padlet.com/enchu_f/cfmwim8irhyo Made with good vibes en-us 2018-08-06 10:56:04 UTC 2025-09-26 13:41:37 UTC hello@padlet.com What is sonar? enchu_f https://padlet.com/enchu_f/cfmwim8irhyo/wish/272064365
Reflected sounds (echoes) from the ocean floor can provide information about underwater conditions as well as objects surrounding the ship. 

Ships use sonar to detect shoals of fish and large whales
]]> 2018-08-06 10:59:35 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272064365 What is ultrasound enchu_f https://padlet.com/enchu_f/cfmwim8irhyo/wish/272064581 Ultrasound is defined as sound with frequencies above 20,000 Hz, which cannot be heard by the human ear. ]]> 2018-08-06 11:04:54 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272064581 enchu_f https://padlet.com/enchu_f/cfmwim8irhyo/wish/272064600 Ultrasound is used in hospitals to observe the internal organs without the need for an operation. It allows doctors to observe fetuses in pregnant mothers, detect cancers and observe tumours in the body.]]> 2018-08-06 11:05:20 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272064600 enchu_f https://padlet.com/enchu_f/cfmwim8irhyo/wish/272064723 Using ultrasound to break up kidney stones into small pieces.]]> 2018-08-06 11:08:17 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272064723 chloe (3) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137311 another use of sound is to levitate objects :0. Sound waves create compressions in the air between two plates, and when two compressions meet at one point, it creates interference. When a drop of water, for example, is caught in the interference between these two varying frequencies, it starts to hover in mid-air.]]> 2018-08-07 00:45:04 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137311 https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137653 2018-08-07 00:49:19 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137653 Ler Xuan 22 https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137693  echolocation
Sending out ultrasound waves and interpreting the returning sound echoes is called (echo + location). Bats flying at night find their meals of flying insects by using echolocation. They send out as many as 200 ultrasound squeaks per second. By receiving the returning echoes, they can tell where prey is and how it is moving. They can also veer away from walls, trees, and other big objects. 
    ]]> 2018-08-07 00:49:48 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137693 Brandon (27) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137753 2018-08-07 00:50:10 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137753 ahMAD (25) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137816 2018-08-07 00:50:56 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137816 Jin Feng (39) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137892  For de-granulation of solid particles: Large solid particle in a suspension or tissues fraction can be broken down by grinding. But very small particles like less than 1mm or so cannot be broken down further using grinders. Then they can be broken down by use of ultrasonic sound waves. These waves are thought to create vigorous crests and troughs in the liquid media. These crests and troughs bring about splitting of particles to smaller ones. ]]> 2018-08-07 00:51:44 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272137892 Koh Yun Zhen Jane(10) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138039 High-intensity vibrations from ultrasound waves are used to safely break up kidney stones in patients. The energy transferred by ultrasound waves is also used to clean medical equipment. One of the most important medical uses of ultrasound is the ultra- sound scanner. ]]> 2018-08-07 00:53:39 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138039 krishmiita 11 https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138063  Researchers at Princess Grace Hospital in London have been developing a system for destroying cancer cells with sound. Using High Intensity Focused Ultrasound (HIFU), they have successfully destroyed prostate cancer cells in their test patients, using only sound waves to heat up and 🤬 the targeted cells. This technology was applied to 159 men with prostate cancer, and after one year, 92% of them did not have a recurrence cancer. The procedure only took about 5 hours. Further tests have to be carried out to confirm the success and reliability of this exciting technology, before it can be used by doctors. ]]> 2018-08-07 00:53:54 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138063 ong zhi xuan(16 https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138099  Infrasound is sound waves with frequencies lower than 20 Hz. Although sounds of such low frequency are too low for humans to hear, whales, elephants and other animals can detect infrasound and use it to communicate. It can be used to detect volcanic eruptions and is used in some types of music. 

 ]]> 2018-08-07 00:54:13 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138099 Harmitha(23) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138119  There are several technologies out there that can heal wounds with sound. One of them is called MIST, which involves spraying a saline solution over a wound area and applying low frequencies to the solution. It has been shown to have a particularly high success rate in healing certain types of wounds, such as foot and leg ulcers. One study saw 69% of ulcers – treated over 12 weeks with this innovative method – completely healed. While it is not yet readily available on the market, investigations into MIST are ongoing, ensuring that this treatment will attain maximum efficiency so that patients can be healed as fast and as reliably as possible. ]]> 2018-08-07 00:54:23 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138119 Naurah(13) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138181 another use of sound is stabilizing brain waves. By creating songs made from a series of overlapping and changing frequencies,the listeners has the ability to balance out the brain waves in each of the brain hemispheres. ]]> 2018-08-07 00:54:53 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138181 tan zhixuan (37) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138197  
Ultra sound is also tried in sterilization. This is done to inhibit growth of microbes and even 🤬 them.

Sonication disrupts the cell wall of bacteria and 🤬 them. But they are not highly lethal but are used in combination with disinfectants for synergistic effect. 

]]> 2018-08-07 00:54:59 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138197 Jolene (8) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138259 Sound can be used to boil water. Peter Davey, a 92 year old saxophone player and resident of Christchurch, New Zealand, invented a device that boils water using sonic waves. The sonic boiler is simply placed into a container of water – it can then boil it within seconds. Since there is no steam produced, the starting amount of cold water is the amount you will drink once boiled. Davey is currently looking for business partners to further test his invention, and to produce it for the mass market.

 
]]> 2018-08-07 00:55:22 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138259 Nicolynn (14) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138280 High Intensity Ultrasound can be used to destroy cancer cells using the sound waves to heat up and target the targeted cells. Therefore, sound waves can be used to destroy cancer cells.
 
 ]]> 2018-08-07 00:55:32 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138280 Yuxuan(19) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138314 another use of sound is echolocation.Sending out ultrasound waves and interpreting the returning sound
echoes is called echolocation. Bats flying at night
find their meals of flying insects by using echolocation. They send out as
many as 200 ultrasound squeaks per second. By receiving the returning
echoes, they can tell where prey is and how it is moving. They can also
veer away from walls, trees, and other big objects.A number of animals that live in water use echolocation, too.
Dolphins, toothed whales, and porpoises produce ultrasound squeaks
or clicks. They listen to the returning echo patterns to find fish and
other food in the water.]]> 2018-08-07 00:55:44 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138314 Wen Ni (9) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138324 Destroy cancer cells :D
Researchers at Princess Grace Hospital in London have been developing a system for destroying cancer cells with sound. Using High Intensity Focused Ultrasound (HIFU), they have successfully destroyed prostate cancer cells in their test patients, using only sound waves to heat up and 🤬 the targeted cells. This technology was applied to 159 men with prostate cancer, and after one year, 92% of them did not have a recurrence cancer. The procedure only took about 5 hours. Further tests have to be carried out to confirm the success and reliability of this exciting technology, before it can be used by doctors.







]]> 2018-08-07 00:55:48 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138324 Emerson (30) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138348 What is vocal trumpet?
 The mouth trumpet sound is produced by using the vocal cords to produce the desired pitch and passing the sound through the lips that are held together with just enough tension so that they vibrate at the same frequency as the vocal cords, producing a trumpet-like sound. ]]> 2018-08-07 00:56:00 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138348 Dinie (5) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138418  
 
John Paluska and Meyer Sound have invented a system, consisting of 123 speakers, that uses noise cancellation to control the often-troublesome sound levels within restaurants. If you have ever found yourself hoarse at the end of a night, then you’re in luck. Noise cancellation works by recording all the sounds in a room, then simultaneously ‘playing them back’ at the original sounds, to cancel out the noisy waves made by drunken customers. The useful system can also send out ambient noise, whenever it is necessary to enliven the atmosphere. No more awkward silences! Installation costs between $10,000 and $100,000. ]]> 2018-08-07 00:56:42 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138418 Yi Wen (18) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138457  
Echolocation


 Bats and dolphins use high frequency sounds to see their surroundings, by listening to the sound reverb from the environment and creating a mental picture of where they are. These days, many blind people are learning to do as the dolphins do, by clicking their tongues and listening for the reverberations. There are already many teachers – masters of the new technique – who show other blind people how to themselves pick up the basics of echolocation, and thereby become more independent. 
]]> 2018-08-07 00:57:02 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138457 Wan yu (17) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138497  Stabilizing Brain Waves 
 Robert Monroe, founder of The Monroe Institute and inventor of Hemi-Sync, has pioneered research into the effects of sound on human consciousness. By creating songs made from a series of overlapping and changing frequencies, he has given listeners the ability to balance out the brain waves in each of the brain hemispheres. ]]> 2018-08-07 00:57:23 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138497 Jia Ci (12) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138605 I]]> 2018-08-07 00:58:12 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138605 Brennen(29) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138639  Sonication is also found to be effective in tissue culture. Some findings suggest that use of sonication selectively enhances the growth of cells & tissues. Also it is found to facilitate gene transfer during tissue culture & in biotechnology. 

]]> 2018-08-07 00:58:33 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138639 Yuxi (2) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138671  Revealing Natural Geometry.  Cymatics is the study of geometric forms created by sound waves. The Cymascope, co-created by John Reid, displays the shapes that certain musical notes make by filling water with tiny particles, which form into perfect geometries when exposed to certain vibrations. Musical notes all have their own unique shapes, as do human voices, animal noises and even the echoes of stars and planets. Cymatics is a young science: it is hoped that further studies in this area will help researchers understand the effects of sound vibrations on everything around us. ]]> 2018-08-07 00:58:50 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138671 Alya(1) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138703  Robert Monroe, founder of The Monroe Institute and inventor of Hemi-Sync, has pioneered research into the effects of sound on human consciousness. By creating songs made from a series of overlapping and changing frequencies, he has given listeners the ability to balance out the brain waves in each of the brain hemispheres. ]]> 2018-08-07 00:59:09 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138703 Lok Lam (24) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138726 *Growing Food*

In 1962, Indian researcher Dr. T. C. Singh carried out studies which showed how sound can increase plant growth. After playing Indian music near balsam plants, he found that they had grown 20% taller and carried 72% more biomass. He even found that by having people perform a traditional Indian barefoot dance known as Bharata-Natyam around marigold flowers, they blossomed 2 weeks earlier than the normal. Various other experiments have found that classical violin music has the most positive effects on plants, while rock music can have some of the more negative effects. ]]> 2018-08-07 00:59:19 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138726 Jia Ci (12 https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138779  Sound can also be used for growing food. 
In 1962, Indian researcher Dr. T. C. Singh carried out studies which showed how sound can increase plant growth. After playing Indian music near balsam plants, he found that they had grown 20% taller and carried 72% more biomass. He even found that by having people perform a traditional Indian barefoot dance known as Bharata-Natyam around marigold flowers, they blossomed 2 weeks earlier than the normal. Various other experiments have found that classical violin music has the most positive effects on plants, while rock music can have some of the more negative effects.



]]> 2018-08-07 00:59:52 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138779 Gillian(7) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138826  Sonar
People use the principles of echolocation to locate objects underwater. During World War I , scientists developed instruments that used sound waves to locate enemy submarines. Instruments that use echolocation to locate objects are known as Sonar stands for “sound navigation and ranging.” The sonar machines could detect sounds coming from submarine propellers. Sonar devices could also send out ultrasound waves and then use the echoes to locate underwater objects. The information from the echoes could then be used to form an image on a screen. ]]> 2018-08-07 01:00:17 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138826 Ming Xian (35) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138859 Boiling Water


Peter Davey, a 92 year old saxophone player and resident of Christchurch, New Zealand, invented a device that boils water using sonic waves. The sonic boiler is simply placed into a container of water – it can then boil it within seconds. Since there is no steam produced, the starting amount of cold water is the amount you will drink once boiled.  
]]> 2018-08-07 01:00:47 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272138859 Tiffany (21) https://padlet.com/enchu_f/cfmwim8irhyo/wish/272139311


Peter Davey invented a device that boils water using sonic waves. The sonic boiler is placed into a container of water – it can boil it within seconds. Since there is no steam produced, the starting amount of cold water is the amount you will drink once boiled.




]]> 2018-08-07 01:05:35 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272139311 shannon 20 https://padlet.com/enchu_f/cfmwim8irhyo/wish/272139791  The telephone
Sound waves has made long-distance voice communication possible. Many people today use cell phones. But whether phone signals travel over wires or by microwaves, as in cell phones, the basic principles are similar. In general, a telephone must do two things. It must translate the sound that is spoken into it into a signal, and it must reproduce the sound that arrives as a signal from somewhere else. Suppose you are phoning your best friend to share some news. You speak into the mouthpiece. Sound waves from your voice cause a thin disk inside the mouthpiece to vibrate. A microphone turns these vibrations into electrical signals. Your handset sends these signals over wire to a switching station. Computers in the switching station connect phone callers and keep them connected until they finish their conversation. Your friend receives the news by listening to the earpiece on his handset. There the process is more or less reversed. The electrical signals that arrive in the earpiece are turned into vibrations that shake another thin disk called a diaphragm. The vibrating diaphragm produces sound waves. The sound your friend hears is a copy of your voice, though it sounds like the real you.]]> 2018-08-07 01:10:35 UTC https://padlet.com/enchu_f/cfmwim8irhyo/wish/272139791