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# Hertz (unit)/Related Articles  Main Article Discussion Related Articles  [?] Bibliography  [?] External Links  [?] Citable Version  [?] A list of Citizendium articles, and planned articles, about Hertz (unit).

## Parent topics

• Unit (measurement) [r]: A basic quantity, multiples or parts of which are used to express other measured quantities. [e]
• International System of Units [r]: Metric unit system based on the metre, kilogram, second, ampere, kelvin, mole and candela. [e]
• Electromagnetism [r]: Phenomena and theories regarding electricity and magnetism. [e]
• Electromagnetic radiation [r]: a collection of electromagnetic waves, usually of different wavelengths. [e]
• Electromagnetic spectrum [r]: The range of electromagnetic waves covering all frequencies and wavelengths. [e]
• Electromagnetic wave [r]: A change, periodic in space and time, of an electric field E(r,t) and a magnetic field B(r,t); a stream of electromagnetic waves, referred to as electromagnetic radiation, can be seen as a stream of massless elementary particles, named photons. [e]
• Frequency [r]: For a periodic (i.e., repeating) phenomena, the number of repetitions per unit of time, usually one second; measured in Hertz [e]

## Other related topics

• Acoustic energy [r]: Energy propagated as pressure waves, through elastic media such as air or water. Hearing is the detection of acoustic energy within the frequency range of the animal detecting the energy [e]
• Bandwidth (computers) [r]: The maximum amount of data that can moved through a connection. [e]
• Bandwidth [r]: In engineering, the length between two cut-off frequencies, as measured in hertz. [e]
• Frequency modulation [r]: Technique for imposing information onto a electromagnetic signal of constant frequency -- the "carrier wave". [e]
• Light [r]: The part of the electromagnetic spectrum visible to a species' biological eye. [e]
• Pitch (music) [r]: Perceived frequency of a sound or musical tone. [e]
• Planck's constant [r]: The constant of proportionality relating the energy of a photon to the frequency of that photon, named sfter Max Karl Ernst Ludwig Planck. [e]
• Second [r]: Please do not use this term in your topic list, because there is no single article for it. Please substitute a more precise term. See Second (disambiguation) for a list of available, more precise, topics. Please add a new usage if needed.
• Speed of light [r]: A physical constant c describing the speed of electromagnetic radiation in vacuum. In the International System of Units the metre is the distance light travels in classical vacuum in 1/c seconds, using the defined value c = c0299  792  458 m/s (exact). [e]
• Wavelength [r]: For a repeating phenomenon such as a radio signal with a given frequency, the wavelength is the length, in meters, of a single repetition [e]