I-antenna ekwaziyo ukudlulisa okanye ukufumana amaza e-electromagnetic (EM). Imizekelo yala maza e-electromagnetic ibandakanya ukukhanya okuvela elangeni, kunye namaza afunyanwa yifowuni yakho. Amehlo akho afumana ii-antenna ezibona amaza e-electromagnetic kwi-frequency ethile. "Ubona imibala (ebomvu, eluhlaza, eluhlaza okwesibhakabhaka) kwi-wave nganye. Ubomvu noluhlaza okwesibhakabhaka zii-frequency ezahlukeneyo zamaza ezinokuthi zibonwe ngamehlo akho.
Onke amaza e-electromagnetic asasazeka emoyeni okanye esithubeni ngesantya esifanayo. Esi santya simalunga ne-$671 yezigidi ngeyure (iikhilomitha ezi-1 zeebhiliyoni ngeyure). Esi santya sibizwa ngokuba sisantya sokukhanya. Esi santya sikhawuleza ngokuphindwe kasigidi kunesantya samaza esandi. Isantya sokukhanya singabhalwa kwi-equation ye-"C". Siza kulinganisa ubude bexesha ngeemitha, ngemizuzwana, nangeekhilogram. Ii-equation zexesha elizayo kufuneka sizikhumbule.
Ngaphambi kokuba sichaze amaza e-electromagnetic, kufuneka sichaze ukuba zeziphi ii-electromagnetic waves. Le yintsimi yombane esasazeka kude nomthombo othile (i-antenna, ilanga, inqaba yerediyo, nantoni na). Ukuhamba kwintsimi yombane kunentsimi yemagnethi enxulumene nayo. Ezi ndawo zimbini zenza i-electromagnetic wave.
Indalo yonke ivumela la maza ukuba athathe nayiphi na imilo. Kodwa eyona milo ibalulekileyo yi-sine wave. Oku kudwetshwe kuMfanekiso 1. Amaza e-electromagnetic ayahluka ngokwendawo kunye nexesha. Utshintsho lwendawo luboniswe kuMfanekiso 1. Utshintsho kwixesha luboniswe kuMfanekiso 2.
umfanekiso 1. I-Sine wave idwetshwe njengomsebenzi wendawo.
umfanekiso 2. Bonisa i-sine wave njengomsebenzi wexesha.
Amaza aphindaphindwa rhoqo. Amaza aphindaphindwa kanye ngomzuzwana kwimo "T". Njengoko edwetshwe njengomsebenzi esithubeni, inani leemitha emva kokuphindaphinda kwamaza linikwe apha:
Oku kubizwa ngokuba yi-wavelength. I-frequency (ebhalwe "F") linani nje lemijikelo epheleleyo egqitywa yi-wave kwisekhondi enye (umjikelo weminyaka engamakhulu amabini ubonwa njengomsebenzi wexesha elibhalwe yi-200 Hz okanye i-200 "hertz" ngomzuzwana). Ngokwezibalo, le yifomyula ebhalwe ngezantsi.
Indlela umntu ahamba ngesantya esiphezulu ngayo ixhomekeke kubungakanani benyathelo lakhe (ubude begagasi) obuphindaphindwe ngesantya samanyathelo akhe (ubuninzi). Ukuhamba kwamaza kuyafana ngesantya. Indlela amaza ahamba ngesantya esiphezulu ngayo ("F") ephindaphindwe ngobukhulu bamanyathelo athathwa ligagasi ngalinye ( ) elinika isantya. Le fomula ilandelayo mayikhunjulwe:
Ukushwankathela, i-frequency yindlela yokulinganisa isantya se-wave oscillates. Onke amaza e-electromagnetic ahamba ngesantya esifanayo. Ke ngoko, ukuba i-electromagnetic wave i-oscillates ngokukhawuleza kune-wave, i-wave ekhawulezayo kufuneka nayo ibe ne-wavelength emfutshane. I-wavelength ende ithetha i-frequency ephantsi.
Ixesha lokuthumela: Disemba-01-2023
