DEFINITION:Sounds of frequency higher then 20,000Hz which are inaudible to human ear,can be produced and are utilized in many useful ways.Such sounds are called ultrasonics.
PROPERTIES:
1:In medical feilds utrasonics waves are being used to diagnose and treat different ailments.
2:These waves are also reflected by differently by different organs,tissues,benign or malignant tumors
They have a frequency of above 20,000Hz inaudible to human ear.
whale can hear ultrasonic sound waves.
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.
Loudspeakers are designed to operate within the audible frequency range (20 Hz to 20 kHz) and are not capable of producing ultrasonic frequencies (above 20 kHz) due to limitations in their design and material properties. At higher frequencies, the components of the speaker system, such as the cone and coil, are not able to efficiently reproduce the ultrasonic waves, resulting in distortion or damage to the speaker. Specialized transducers or speakers designed for ultrasonic frequencies are needed to produce sound waves in the ultrasonic range effectively.
The standard value of velocity of ultrasonic waves in benzene liquid is 1260 m/sec.
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.
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.
Sound waves- ultrasonic, sonic, or intrasonic are generally invisible. You cannot see sound.
Ultrasonic sensors are also known as transceivers but are more generally called transducers. Ultrasonic sensors work similar to radar or sonar which generate high frequency sound waves.
No, ultrasonic waves will have difficulty passing through a 1cm thick iron plate due to the high density and thickness of the material. Iron is known to be a good reflector and attenuator of ultrasonic waves, making it an obstruction to their passage.
Diffraction of ultrasonic waves is important because it helps in focusing and steering the waves towards a specific target, enhancing their resolution and precision in applications like medical imaging, non-destructive testing, and industrial processes. It also allows for the precise manipulation and control of ultrasonic waves in various technological applications.
No, ultrasonic waves cannot be polarized because they are mechanical waves that propagate through a medium by vibration and compression, unlike electromagnetic waves which can be polarized due to their transverse nature.