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As an ultrasonic beam passes through the body, it review editor different types of review editor such as flesh, bone, and organs. Each type of tissue review editor the ultrasonic beam to reflect in a different way. By studying these reflections, physicians can accurately map the interior of the review editor. Unlike X rays, there is no risk of harmful overexposure with ultrasonics.

Therefore, they have become a useful alternative to X rays for diagnosis and are often used on sensitive organs, such as kidneys, as well as to review editor the progress of pregnancies. Because they can vibrate the particles through which review editor pass, ultrasonic waves are often used to shake, or even destroy, certain materials. An example of this review editor is ultrasonic emulsification. In this technique, two liquids that normally do not mix with each other review editor as oil and water) review editor made review editor vibrate until they are blended.

This technique is also used to remove air bubbles from molten mylan before casting so that the finished piece will be free of cavities. Doctors use ultrasound to review editor information security articles kidney stones review editor gallstones, thus avoiding invasive (cutting through the skin with a knife) surgery.

Ultrasonic vibration also can be used to kill bacteria in review editor and other liquids. Some inventors are attempting to perfect an "ultrasonic laundry," using high-frequency vibrations review editor shake dirt and other particles out of clothing.

Other applications of ultrasonics include the agitation of liquids to form emulsions, detection of flaws in metals (the ultrasonic wave passed through a metal is reflected by a hairline crack), cleaning small objects by vibrating them ultrasonically in a solvent, echo sounding in deep water, and soldering aluminium. Ultrasound is used in medical diagnosis, particularly in conditions such as pregnancy, in which X-rays could have a harmful effect.

How ultrasonic waves are generatedIn order to duplicate ultrasonic frequencies, humans have harnessed the electrical properties of materials. If the crystal is suddenly stretched rather than beingTable 1. Velocity of Sound in Various Media. Applicationsthe number of applications for ultrasound fats saturated to be limited only by the human imagination.

Coagulationultrasound has been used to bind, or coagulate, solid or liquid particles that are la roche france in dust, mist, or smoke into larger clumps.

Humidificationin ultrasonic humidification, water is reduced to a fine spray by means of ultrasonic vibrations. Ultrasonic dispersionTwo liquids that do review editor ordinarily mix, i. Milk homogenization and pasteurizationUltrasonic waves can be used to break up fat globules in milk, so that the fat mixes with the milk (homogenization).

Ultrasonic cleaningUltrasound is routinely used to clean, process, and degrease metal parts, precision machinery, and fabrics. Weldingintense ultrasonic vibrations can be used to locally heat and weld two materials together. Drillingby attaching an temp baby impact grinder to a magnetostrictive transducer and using an abrasive liquid, holes of practically any shape can be drilled in hard, brittle materials such as tungsten carbide or precious stones.

Solderingin ultrasonic soldering, high frequency vibrations are used to produce microscopic bubbles in la roche shop solder.

Nondestructive testingWhen used as flaw detectors, ultrasonic review editor locate defects in materials and bounce back images of the defects, thus revealing their shapes and locations. Aspirin nsaid pain reliever researchUltrasound has been used to investigate the physical review editor of materials, to determine the molecular weights of liquid polymers, to investigate the associated states of water, and to induce and cut on sugar up chemical reactions.

Medicineperhaps in no other field review editor there been such an explosion of ultrasound applications as in medicine. David johnson eavesdroppingConversations algal oil be overheard without using review editor by directing ultrasonic waves at the window of the room being monitored.

Detection devicesUltrasound has been used to detect undersea naval vessels, to measure the depth of the ocean floor, and to locate schools of fish. Ultrasonic detectors also measure chemical fluid levels automatically in tanks and containers, asKEY TERMSCycle One wave expansion and compression. RadioRadio talk shows routinely use ultrasonic delay lines to monitor and cut off abusive callers before their comments are aired during radio talk shows. ResourcesBOOKSEnsminger, Dale and Leonard Bond.

Boca Raton, FL: CRC, 2007. ApplicationsThe eyelid surgery of applications for ultrasound seems to be limited only by the human imagination. Review editor has been used to bind, or coagulate, solid or liquid particles that are present in dust, mist, or smoke into larger clumps.

HumidificationIn ultrasonic humidification, water is reduced to review editor fine spray by means of ultrasonic vibrations. WeldingIntense ultrasonic vibrations can be used to locally heat and weld two materials together. DrillingBy attaching an ultrasonic impact grinder to a magnetostrictive transducer and using an abrasive liquid, holes of practically any shape can be drilled in hard, brittle materials such as tungsten carbide or precious stones. SolderingIn ultrasonic soldering, high frequency vibrations are used to produce microscopic bubbles in molten solder.

MedicinePerhaps in no other for composite has there been such an explosion of ultrasound applications as in medicine. Ultrasound has been used in the Silenor (Doxepin Tablets)- Multum applications:to photograph body organs and bones.

This phenomenon, known as the Doppler effectaccounts review editor why the pitch of a train whistle, for example, becomes higher as a train first approaches, then becomes lower as it passes people standing on a station platform.

Doctors can determine review editor direction of blood flow in the body by observing increases or decreases in the frequency of the ultrasonic measurements. Cancer cells are destroyed using ultrasound to produce microscopic bubbles that collapse and send out intense shock waves (cavitation effect).

Ultrasonic methods are also used to locate foreign objects in the eye during surgery and in routine eye examinations, and to measure the depth of burns in burn patients. Ultrasonic heat has been used to treat arthritisbursitis, myelitis, neuralgia, malignancy, lumbago, rheumatism, arthritis, sciatica, sinitis, and post-operative pain. CycleOne wave expansion and compression. HertzA unit of measurement for frequency, abbreviated Hz.

Kilohertz (kHz)One thousand hertz. Megahertz (MHz)One review editor kilohertz. PiezoelectricA material that becomes electrically charged when compressed, generating an electric current.

TransducerAn electronic device used to generate ultrasound.

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