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hertz
(redirected from kilohertz)

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hertz

SI unit of frequency (the number of repetitions of a regular occurrence in one second). A wave source has a frequency of 1 Hz if it produces one wave each second. Human beings have an audible range from approximately 20 Hz to 20,000 Hz. Radio waves are often measured in megahertz (MHz), millions of hertz, and the clock rate of a computer is usually measured in megahertz. The unit is named after German physicist Heinrich Hertz.



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? Mentioned in ? References in periodicals archive
 
The effect of duty cycle and frequency on muscle torque production using kilohertz frequency range alternating current.
Wrist extensor torque production and discomfort associated with ... by Buccella, Danielle / Physical Therapy
Other researchers have found that organs beneath the knee on each leg of some roach species pick up both air- and substrate-borne vibrations below 5 kilohertz.
Hey, roach babe: male cockroaches give fancy courting whistles by Milius, S. / Science News
Using equipment designed to study the very high-pitched bleeps that bats make, scientists have found that the frog calls also include very high-pitched chirps that topped 20 kilohertz (20,000 cycles per second)--sound frequencies that people can't hear.
Ultrasonic frogs raise the pitch by Sohn, Emily / Science News for Kids
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