Some of the Benefits of Ultrasonic Sound. Definition of Sound
Sound is vibration. For example, pond water gurgles, the wind in the trees, and the sound of dogs barking.
Some of the Benefits of Ultrasonic Sound. So, the sound is vibration. However, not all vibrations can produce sound. There are some objects that are vibrating, but the sound cannot be heard. If the number of vibrations of an object per unit of time does not meet a certain number, the resulting sound cannot be heard.
Sounds whose frequency is less than 20 Hz cannot be heard by normal human ears. Sounds in this frequency area are called infrasound. Likewise, sounds with frequencies above 20,000 Hz.
The rate of sound propagation in the air at room temperature is approximately 340 m / s. Currently, there are many aircraft, especially the type of fighter aircraft that can fly at speeds exceeding the speed of sound propagation in the air.
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In the early 20th century, travel from Europe to America took 7 to 10 days. Concorde, the world’s only supersonic passenger aircraft, can fly at twice the speed of sound at an altitude of 60,000 feet (18 feet).
The human ear also needs sound at the right strength or intensity level to be pleasant to hear.
Crickets and dogs can hear infrasound. Moths, whales, and owls can catch ultrasound. Bats are considered to have natural radar because they are capable of producing ultrasonic sensors that are emitted in all directions and are also able to pick up on their reflections.
Therefore, bats can avoid collisions with other objects, even though they fly at night which is very dark. Dolphins can communicate with the opposite sex from a distance using ultrasonic waves.
Benefits of Ultrasonic Sound
In everyday life, ultrasound is used in various fields, namely
Field of Medicine
As it is known, the reflectivity of ultrasonic waves makes ultrasonic waves usable in the medical field, including observing the inside of human organs. It is used for diagnosis and treatment, to destroy tumors or kidney stones, and to study the parts of the body that should not be x-rayed, for example, a fetus in the womb, to kill bacteria in the food to be preserved, to make the metal mixture even.
Utilization in Detecting
Metal Damage Before the development of ultrasonic detectors, a common tool used as a test tool without damaging the material was x-ray radiography. With the ultrasonic detector which is very precise, the examination of a metal can use ultrasonic waves.
Ultrasonic wave detectors can also be used in the inspection of welding results, both for welding metal plates and in welding pipes. In fact, it is also used to detect cracks in metal, as well as thinning that occurs in pipes or tank walls that cannot be visually observed.
Utilization in Measuring Ocean Depth
When going to measure the depth of the sea, ultrasonic waves are emitted from a ship above sea level. The waves travel in the water to the ocean floor. Then, the waves are reflected by the seafloor. The reflected ultrasonic waves will be detected by the detectors on the ship.