megahertz - definizione. Che cos'è megahertz
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Cosa (chi) è megahertz - definizione

SI UNIT OF FREQUENCY
Hz; MHz; Kilohertz; KHz; Mhz; 1 E3 Hz; Gigahertz; GHz; Petahertz; Exahertz; KHZ; MHZ; Zettahertz; Yottahertz; EHz; PHz; ㎐; ㎑; ㎒; ㎓; ㎔; Gihz; Khz; DaHz; MegaHertz; Picohertz; Femtohertz; Attohertz; Yoctohertz; Zeptohertz; Nanohertz; Microhertz; Millihertz; Decahertz; Decihertz; Centihertz; Hectohertz; Tetrahertz; ZHz; Megacycles; 10,000 hertz; Hertz (unit); Hertez; Khertz; Megahertz; Hertz (frequency); Terahertz (unit); Hertz unit; Ronnahertz; Quettahertz; Rontohertz; Quectohertz
  • A [[sine wave]] with varying frequency
  • sinusoidal]] periodic phenomenon that may be analyzed in terms of frequency. Two cycles are illustrated.

megahertz         
(megahertz)
A megahertz is a unit of frequency, used especially for radio frequencies. One megahertz equals one million cycles per second.
...UHF frequencies of around 900 megahertz.
N-COUNT: num N
MegaHertz         
(MHz) Millions of cycles per second. The unit of frequency used to measure the clock rate of modern digital logic, including microprocessors. (1994-10-27)
megahertz         
(abbrev.: MHz)
¦ noun (plural same) a unit of frequency equal to one million hertz.

Wikipedia

Hertz

The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose expression in terms of SI base units is s−1, meaning that one hertz is the reciprocal of one second. It is named after Heinrich Rudolf Hertz (1857–1894), the first person to provide conclusive proof of the existence of electromagnetic waves. Hertz are commonly expressed in multiples: kilohertz (kHz), megahertz (MHz), gigahertz (GHz), terahertz (THz).

Some of the unit's most common uses are in the description of periodic waveforms and musical tones, particularly those used in radio- and audio-related applications. It is also used to describe the clock speeds at which computers and other electronics are driven. The units are sometimes also used as a representation of the energy of a photon, via the Planck relation E = , where E is the photon's energy, ν is its frequency, and h is the Planck constant.

Esempi dal corpus di testo per megahertz
1. Twenty–two megahertz are expected to be subject to open access‘‘ rules being pushed by Martin.
2. Frontline wants to combine 10 megahertz of spectrum dedicated to public safety with another 10 megahertz of commercial spectrum, set for auction early next year, to create a shared national network.
3. The FCC approved most of a Frontline–authored plan that would combine 10 megahertz of spectrum dedicated to public safety with another 10 megahertz of commercial spectrum to create a national network shared by emergency responders and the winning bidder.
4. Auction of 700–megahertz spectrum for wireless carriers generated $1'.6 billion for the Treasury.
5. Back in 1''7, Congress mandated that a portion of the television spectrum – 24 megahertz – be set aside for emergency communications.