megahertz

Introduction

ThebasicunitoffluctuatingfrequencyisHertz,whichisbasedonthethousand-carryingsystem;1MHzisequivalentto1000kilohertz(KHz),whichis10tothe6thpowerofHz.Itisworthnotingthatmegahertzisjustadefinitionalnoun,with1millionsolutionsinthemeasurementunit.

IntheradiofrequencydivisiondefinedbytheInternationalTelecommunicationUnion:

Verylowfrequency(VLF):3~30kilohertz(KHz)

Lowfrequency(LF):30~300kilohertz(KHz)

Intermediatefrequency(MF):300~3000kilohertz(KHz)

Highfrequency(HF):3~30MHz(MHz)

VHF:30~300MHz(MHz)

UHF:300~3000MHz(MHz)

Ultrahighfrequency(SHF):3~30gigahertz(GHz)

Extremehighfrequency(EHF):30~300gigahertz(GHz)

unitConversion

ThebasicunitoffrequencyisHertz(Hz),abbreviatedasHertz,1Hz=1/s,thatis,thenumberofvibrationscompletedperunittime.

1kilohertz(kHz10³Hz)=1000Hz

1megahertz(MHz10⁶Hz)=1000000Hz

1gigahertz(GHz10⁹Hz)=1000000000Hz

1terahertz(THz10¹²Hz)=1000000000000Hz

1beathertz(PHz10¹⁵Hz)=1000000000000000Hz

1EHz(EHz10¹⁸Hz)=1000000000000000000Hz

Relatedconcepts

Hertz

HertzisalsoaunitoffrequencyintheInternationalSystemofUnits.Itisameasurementofthenumberofrepetitionsofperiodicchangesinaunitoftime.Hertz'snamecomesfromtheGermanphysicistHeinrichRudolfHertz.ThesymbolisHz.

1Hz=1/s,thatis,thenumberofvibrationscompletedinaunittime,theunitisHertz(1Hz=1time/second).

Frequency

Frequencyisthenumberofcyclicalchangescompletedinaunittime,andisaquantitydescribingthefrequencyofperiodicmotion.Commonlyusedsymbolsforνmeans,theunitisonepartofasecond,andthesymboliss^-1.InordertocommemoratethecontributionoftheGermanphysicistHertz,peoplenamedtheunitoffrequencyHertz,abbreviatedas"Hertz",andthesymbolisHz.Everyobjecthasafrequencythatisdeterminedbyitsnatureandhasnothingtodowiththeamplitude,calledthenaturalfrequency.Theconceptoffrequencyisnotonlyappliedinmechanics,butalsooftenusedinelectromagnetics,opticsandradiotechnology.