Ultrasound ? Quick Project :: essays research papers

sonography Quick ProjectUltrasounds are sound waves with frequency beyond the human limits, therefore humans are unable to hear them. It even out travels at exactly the same speed as sound in any medium. Humans keep hear sound within the frequency range of about 20 to 20,000 Hz, so any sound higher up 20 kHz is ultrasound. Ultrasound or ultrasonography is a medical checkup imaging technique that uses high frequency sound waves and their echoes. The technique is exchangeable to the echolocation used by bats, whales and dolphins, as well as echo sounder used by submarines.Ultrasound has very high frequency vibrations and heap be used to clean things. Really dirty teeth bottomland be cleaned superbly in this way. Really delicate mechanisms, such as in antique clocks and watches, can also be safely cleaned. Ultrasound for scanning is the most popular medical use. This is safer than using X-rays. unhatched babies can be seen by moving an ultrasonic sender crossways the mothers stomach. The sound waves will be projected from the transmitter and the waves are able to travel from one part of the human universe to the other. As it hits a tissue or an organ, some waves reflects and gives of echos which can attain up a picture on the TV screen. The shorter the wavelength is, the finer the position of the picture is. Its use in scanning goes far beyond pregnancies. some other parts of the body are analysed using it (bladder gallstones, the heart, etc.). Ultrasound can even check airplane wings for cracks that would be invisible on the surface.Ships use SONAR to determine the depth of water they are in. Ultrasound is used here because they have a higher frequency and this allows it to fathom further. However, the disadvantage is that it might scare the fishes away as it would be alike noisy for them.