ultrasonics, vibrations of frequencies greater than the upper limit of the audible range for humansthat is, greater than about 20 kilohertz. The term sonic is applied to ultrasound waves of very high amplitudes.Many animals have the ability to hear sounds in the human ultrasonic frequency range.
What do we mean the ultrasonic?
Definition of ultrasonic
1 : having a frequency above the human ear’s audibility limit of about 20,000 hertz used of waves and vibrations. 2 : utilizing, produced by, or relating to ultrasonic waves or vibrations.
What are ultrasonic for Class 8?
What is Ultrasound? Sound waves with frequencies higher than the upper audible limit of human hearing are called ultrasound.
Where are ultrasonic waves used?
Ultrasonic waves are used for the following purposes.
- Ultrasonic flaw detection.
- Cutting and matching of hard materials.
- Ultrasonic soldering and welding.
- Measurement of flow devices.
- Applications in medicine.
- Thermal effect.
- Ultrasonic as means of communication.
What is ultrasonic communication?
The most common approach to wireless communications has been radio frequency (RF).Ultrasonic data transmission uses a simple combination of sound, software, and existing device hardware to create a seamless, reliable, secure, cost-effective, and energy-efficient approach to connectivity and always-on communication.
What is the difference between ultrasound and ultrasonic?
2 Answers. Ulrasound is sound that have high pitched for the human ear to hear and is out of human audible range. Ultrasonic is an adjective which is used to describe a sound as being an ultrasound.
What are ultrasounds Class 9?
Ultrasound is used to clean machine parts located in places which are not easily accesible – electronic components, internal parts, spiral parts etc. The objects are placed in a cleaning solution and waves are passed through it.It is used to detect defects, flaws, cracks in machine parts, bridges, building etc.
What is ultrasonic sound answer?
Ultrasonic wave is defined as inaudible sound with high frequency for human the frequency of which generally exceeds 20 kHz.These days, sound wave which is not intended to be heard is also called ultrasonic wave.
What is ultrasound scanner class 9?
Ultrasound scanners
Doctors use these ultrasound scanners to get image of internal organs of human body. These waves reflect on organs and reflect back where there is change in tissue density. These help in finding image of different organs.
What is ultrasonic speed?
Ultrasonic is used for ultrasound waves and is defined as waves with frequency more than 20 kHz. They cannot be heard by human beings. Supersonic is used for objects which travel at a speed greater than the speed of sound.
What is an example of ultrasonic?
The definition of ultrasonic, also known as ultrasound, is sound waves that have a higher frequency than the human ear can hear. An example of ultrasonic is an ultrasound image of an unborn baby. An example of ultrasonic is a dog whistle that cannot be heard by humans,See ultrasonic welding and saser.
Who can hear ultrasonic sound?
Ultrasonic sound waves are the waves having frequency above 20,000 hertz. Animals such as bats, dos and dolphins can hear these high pitched sounds. So, the correct answer to this question is dogs, bats and dolphins.
What is ultrasonic imaging?
Ultrasound imaging (sonography) uses high-frequency sound waves to view inside the body. Because ultrasound images are captured in real-time, they can also show movement of the body’s internal organs as well as blood flowing through the blood vessels.
What is ultrasonic distance sensor?
An ultrasonic sensor is an electronic device that measures the distance of a target object by emitting ultrasonic sound waves, and converts the reflected sound into an electrical signal. Ultrasonic waves travel faster than the speed of audible sound (i.e. the sound that humans can hear).
What do we use ultrasound for?
An ultrasound scan, sometimes called a sonogram, is a procedure that uses high-frequency sound waves to create an image of part of the inside of the body. An ultrasound scan can be used to monitor an unborn baby, diagnose a condition, or guide a surgeon during certain procedures.
Which animal produces ultrasonic?
Certain animals can emit and hear ultra-sonic frequencies more than 20 kilohertz. Bats, Insects like beetles, moths, praying mantis, dolphins, dogs, frogs and toads, etc. communicate using ultrasonic hearing.
Is ultrasonic harmful?
Some studies conducted in perfect laboratory conditions show that ultrasonic sound can be fatal to certain species by critically increasing their body temperature or causing audio-induced seizures.
What is ultrasonic sound frequency?
20 kHz
Sounds with a frequency of 20 kHz and higher are referred to as ultrasound (or ultrasonic sound). High frequency sound is sound of which the frequency lies between 8 and 20 kHz. High frequency sound with a frequency over 16 kHz can hardly be heard, but it is not completely inaudible.
What makes ultrasonic sound?
Crystals of materials such as quartz vibrate very fast when electricity is passed through theman effect called piezoelectricity. As they vibrate, they manipulate the air around them and the fluids they come in contact with, producing ultrasound waves.
What is frequency of sound Class 8?
Frequency: The number of vibrations made by the vibrating body in one second is known as its frequency. The SI unit of frequency is the hertz (Hz).
What are ultrasonic vibrations?
SUMMARY. Ultrasonic vibrations are sound waves of frequencies above the audible range. They are subject to the same general physical laws as ordinary sound. Their high frequency and short wavelength make them capable of many uses that depend on the transmission of energy and on directional control of this trans mission
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