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The Basics of Frequency
The Basics of Frequency
Frequency is the number of occurrences of a repeating event per unit of time. In physics, it is used to describe oscillations and waves, such as sound, light, and alternating current.
Introduction & History
The study of frequency began with observations of pendulums and musical instruments. The unit of frequency, the Hertz, is named after Heinrich Hertz, who was the first to conclusively prove the existence of electromagnetic waves in the 1880s.
Key Units
Hertz (Hz)
The SI unit of frequency, equal to one cycle per second.
Kilohertz (kHz)
Used for audio frequencies.
Megahertz (MHz)
Used for radio waves and computer processor speeds.
Gigahertz (GHz)
Used for microwave signals and modern computer processors.
Practical Applications
Radio and Telecommunications
Audio Engineering
Computer Processors
Medical Imaging (Ultrasound)