kHz
Học thuậtThân thiện
Definition
- Noun:
- Kilohertz: A unit of frequency equal to one thousand hertz (1000 Hz). It is used to measure cycles per second, particularly in radio frequencies, sound waves, and electronic signal processing.
Usage Examples
- Noun:
- The radio station broadcasts at a frequency of 98.5 kHz.
- Human hearing typically ranges from 20 Hz to 20 kHz.
- The processor's clock speed is measured in kHz or MHz.
Advanced Usage
- Technical Specification: "kHz" is commonly used in technical fields like acoustics, telecommunications, and electronics to specify frequencies.
- The ultrasonic dog whistle emits a sound at 22 kHz, which is inaudible to humans.
Variants and Related Words
- Hz (Hertz): The base unit of frequency, equal to one cycle per second.
- The standard electrical power frequency in many countries is 50 Hz.
- MHz (Megahertz): A unit of frequency equal to one million hertz.
- GHz (Gigahertz): A unit of frequency equal to one billion hertz.
Synonyms
- Kilohertz: The full term for the abbreviation "kHz".
- Kilocycles per second (kc/s): An older, equivalent term sometimes used in older technical literature.
Notes
- Abbreviation: "kHz" is the standard abbreviation for kilohertz. It is always written with a lowercase 'k', an uppercase 'H', and a lowercase 'z'.
- Context: This term is almost exclusively used in scientific, technical, and engineering contexts. It is not typically used in everyday conversation.
Noun
- one thousand periods per second