ultrasonic frequency การใช้

• The bat ultrasonic frequency and range have been reported in different studies.
• The Rayleigh waves used for this purpose are in the ultrasonic frequency range.
• The moths have tympanic organs, drum-like hearing devices that are sensitive to ultrasonic frequencies.
• The ultrasonic frequency range enabled wholly new kinds of application in medicine and industry.
• Michelson's moth will buzz at an ultrasonic frequency and so could be used for echolocation.
• The audio range falls between 20 ultrasonography and elastography rely on the ultrasonic frequency range.
• Electronics can filter electrical signals, but can not remove ultrasonic frequencies already in the air.
• The researchers found that the whales emitted a series of very short directional clicking sounds at ultrasonic frequencies.
• Rayleigh waves propagating at high ultrasonic frequencies ( 10-1000 MHz ) are used widely in different electronic devices.
• :Sonication usually uses ultrasonic frequencies.
• Ultrasonic actuators are designed to produce movements in a micrometer order at ultrasonic frequencies ( over 20 kHz ).
• An alternating current oscillating at ultrasonic frequency is applied by a separate power supply unit to the piezoelectric transducers.
• The lateral resolutions depends on the ultrasonic frequency, the acoustic beam diameter and the signal-to-noise ratio ( contrast ).
• The crystal vibrates at the ultrasonic frequency and is mechanically coupled to the surface of the specimen to be tested.
• Many flying mantids have evolved a highly sensitive ear which is capable of detecting ultrasonic frequencies emitted by bats using echolocation.
• The tip of the needle vibrates at ultrasonic frequency to sculpt and emulsify the cataract while the pump aspirates particles through the tip.
• :Sounds like that commonly come from ultrasonic frequencies but often still tend to make some audible noise, especially as they change operating modes.
• Several Canon DSLR cameras rely on dust reduction systems based on vibrating the sensor at ultrasonic frequencies to remove dust from the sensor.
• A super tweeter is generally intended to respond well into ultrasonic frequencies over 20 kHz, the commonly accepted upper frequency limit of human hearing.
• The displacement speed is calculated by comparing the ultrasonic frequencies picked up by the radar and the speed at which the echo is returned.