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| From: | To: |
| Unit | Symbol | Description |
|---|---|---|
| Hertz | Hz | Measures the frequency of cycles per second. |
| Kilohertz | kHz | Measures thousands of cycles per second. |
| Megahertz | MHz | Measures millions of cycles per second. |
| Gigahertz | GHz | Measures billions of cycles per second. |
| Terahertz | THz | Measures trillions of cycles per second. |
| Revolutions per minute | RPM | Measures the number of turns in one minute. |
Frequency is the number of cycles or oscillations of a wave per unit of time. It is measured in hertz (Hz), where one hertz is equal to one cycle per second.
Frequency is the number of cycles per second, while wavelength is the distance between successive peaks of a wave. They are inversely related; as frequency increases, wavelength decreases.
Frequency is measured using instruments like frequency counters, oscilloscopes, and spectrum analyzers. These devices count the number of cycles per second of a signal.
The standard unit of frequency is the hertz (Hz). Other units include kilohertz (kHz), megahertz (MHz), gigahertz (GHz), and terahertz (THz).
The typical frequency range of human hearing is from 20 Hz to 20,000 Hz (20 kHz). This range can vary with age and individual hearing ability.
Resonant frequency is the natural frequency at which a system oscillates with the greatest amplitude. It occurs when the frequency of an external force matches the natural frequency of the system.
Analog frequency refers to continuous signals that vary smoothly over time, while digital frequency refers to discrete signals that change in steps or pulses. Digital signals are often used in modern communication systems.
Higher frequencies can carry more data and provide better resolution but may have shorter transmission ranges and be more susceptible to interference. Lower frequencies can travel longer distances and penetrate obstacles better.
Frequency modulation (FM) is a method of encoding information in a carrier wave by varying its frequency. It is commonly used in radio broadcasting and communication systems.
A frequency synthesizer generates a range of frequencies from a single reference frequency. It is used in communication devices, signal generators, and electronic test equipment to produce precise and stable frequencies.