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It's done using exactly the same principle as radar:
-- You know the speed of sound through the seawater.
-- You send out a pulse of sound underwater ... a tremendously loud "BEEP". Also, at exactly the same instant, you start a clock.
-- The sound travels down to the bottom and hits the sea floor. Some of the sound is absorbed, and some bounces off of the sea floor. The part that bounces off sprays away in all different directions. A small part of the sound energy goes back exactly the way it came ... back toward your equipment on the boat.
-- Back on the boat, your clock is still running, and your sensitive equipment is listening for a weak echo of a beepto come up from the sea floor. When it hears the echo, the clock stops.
-- Multiply the (speed of sound in the water) by the (length of time it took for the beep echo to return). The answer is the (distance the sound traveled on its round-trip) ... which is exactly double the depth of the water under the boat.
Ultrasonic (inaudible) sound is used for two main reasons:
1). Shorter wavelengths can resolve smaller details, giving a clearer picture of the topography on the sea floor. Same reason 'ultrasound' is used for medical imaging.
2). Probing with loud audible sound signals would drive the people on the boat crazy. So they use sound that people can't hear. That way, only all the whales and other sea life within a thousand miles are upset and irritated and have their feeding and mating processes and social communication disrupted.
What else can I help you with?
How do you detect ultrasonic waves by thermal method?
By using Wheat's stone bridge we can detect by thermal method. placing platinum wire in which ultrasonic waves have to be tested, due to change in temperature produced in the wire resistance of the wire changes, it is noted by using galvanometer in the bridge.
Explain how ultrasonic waves can be produced in the laboratory?
Ultrasonic waves can be produced in the laboratory using a device called an ultrasonic transducer. The transducer converts electrical energy into mechanical vibrations, which generate the ultrasonic waves. These waves can be used for various applications, including medical imaging, cleaning, and material testing.
How can you trace ultrasonic waves?
Ultrasonic waves can be traced using ultrasonic sensors that emit the waves and then detect their reflections. These sensors send out high-frequency sound waves that bounce off objects and return to the sensor, allowing for measurement of distance, presence, or motion based on the time it takes for the waves to return. By analyzing the wave reflections, it is possible to trace the path and interactions of ultrasonic waves.
What are two applications of ultrasonic waves?
Two applications of ultrasonic waves are medical imaging, such as ultrasounds used to visualize internal organs and structures in the body, and industrial testing, like using ultrasonic waves to detect defects in materials or to clean surfaces.
What is used to determine the depth of water?
The depth of water is typically measured using instruments like depth sounders, echo sounders, or sonar devices, which send sound waves through the water and measure the time it takes for the waves to reflect back. This information is then used to calculate the water depth based on the speed of sound in water.
How do you detect ultrasonic waves by thermal method?
By using Wheat's stone bridge we can detect by thermal method. placing platinum wire in which ultrasonic waves have to be tested, due to change in temperature produced in the wire resistance of the wire changes, it is noted by using galvanometer in the bridge.
Explain how ultrasonic waves can be produced in the laboratory?
Ultrasonic waves can be produced in the laboratory using a device called an ultrasonic transducer. The transducer converts electrical energy into mechanical vibrations, which generate the ultrasonic waves. These waves can be used for various applications, including medical imaging, cleaning, and material testing.
What is the output signal of ultrasonic thickness gauge?
An ultrasonic thickness gauge outputs ultrasonic waves which are reflected off a base surface. The resistance caused by the "coating layer" is measured by the magnitude of the returned waves. This resistance is used to determine a thickness measurement.
How can you trace ultrasonic waves?
Ultrasonic waves can be traced using ultrasonic sensors that emit the waves and then detect their reflections. These sensors send out high-frequency sound waves that bounce off objects and return to the sensor, allowing for measurement of distance, presence, or motion based on the time it takes for the waves to return. By analyzing the wave reflections, it is possible to trace the path and interactions of ultrasonic waves.
What are two applications of ultrasonic waves?
Two applications of ultrasonic waves are medical imaging, such as ultrasounds used to visualize internal organs and structures in the body, and industrial testing, like using ultrasonic waves to detect defects in materials or to clean surfaces.
Which animal can hear ultrasonic waves?
whale can hear ultrasonic sound waves.
Can an ultrasonic wave be produced by using speakers?
no Because ultrasonic sound waves are not audible and it is not possible to create that much loudness in normal speakers.
Are ultrasonic waves called as electromagnetic wave?
No ultrasonic waves are not a form of electromagnetic wave. Ultrasonic waves are nothing more than high frequency sound waves. They can be made with a suitable speaker or transducer.
What is used to determine the depth of water?
The depth of water is typically measured using instruments like depth sounders, echo sounders, or sonar devices, which send sound waves through the water and measure the time it takes for the waves to reflect back. This information is then used to calculate the water depth based on the speed of sound in water.
What is the standard value of velocity and wavelenght of ultrasonic waves in benzene?
The standard value of velocity of ultrasonic waves in benzene liquid is 1260 m/sec.
What is the best way to clean a metal watch band?
An ultrasonic jewelry cleaner can effectively clean watch bands using just water and ultrasonic waves.
Can you see ultrasonic sound waves?
Sound waves- ultrasonic, sonic, or intrasonic are generally invisible. You cannot see sound.
