Hz

Học thuật
Thân thiện
Definition

Noun: * The unit of frequency: A hertz (Hz) is the standard scientific unit for measuring frequency. It is defined as one cycle per second. It is used to measure how often a repeating event occurs in one second.

Usage
  • Hz is an abbreviation for "hertz". It is always written with a capital 'H' and a lowercase 'z'. It follows a number.
  • It is used in scientific, technical, and everyday contexts to describe the frequency of waves (like sound, light, or radio) or the rate of any periodic process.
Examples
  • The standard pitch for musical tuning is A4 = 440 Hz.
  • This power supply operates at 60 Hz.
  • Human hearing typically ranges from 20 Hz to 20,000 Hz.
  • The processor's clock speed is 3.5 gigahertz (GHz), which is 3.5 billion Hz.
Advanced Usage
  • Kilohertz (kHz): 1,000 hertz.
    • An AM radio station might broadcast at 540 kHz.
  • Megahertz (MHz): 1,000,000 hertz.
    • Older computer processors were measured in MHz.
  • Gigahertz (GHz): 1,000,000,000 hertz.
    • Modern CPU speeds are often measured in GHz.
Variants and Related Words
  • Hertz: The full, unabbreviated form of the unit. It is synonymous with Hz.
  • Cycle per second (cps): An older term that is equivalent to one hertz. Hz is now the standard term.
  • Frequency: The general concept that Hz measures (the rate of occurrence of a repeating event).
Synonyms
  • Cycle per second (cps) (archaic/technical)
Notes
  • The unit is named after Heinrich Hertz, a German physicist who made important contributions to the study of electromagnetism.
  • It is an SI derived unit (International System of Units).
Noun
  1. the unit of frequency; one hertz has a periodic interval of one second

Từ đồng nghĩa

Từ gần giống

Từ chứa "Hz"

Từ có nhắc đến "Hz"