Antena yomwe imatha kutumiza kapena kulandira mafunde a electromagnetic (EM). Zitsanzo za mafunde a electromagnetic awa ndi monga kuwala kuchokera ku dzuwa, ndi mafunde omwe amalandiridwa ndi foni yanu yam'manja. Maso anu amalandira ma antenna omwe amazindikira mafunde a electromagnetic pa frequency inayake. "Mumawona mitundu (yofiira, yobiriwira, yabuluu) mu funde lililonse. Yofiira ndi yabuluu ndi ma frequency osiyana a mafunde omwe maso anu amatha kuzindikira.
Mafunde onse amagetsi amafalikira mumlengalenga kapena mumlengalenga pa liwiro lomwelo. Liwiro limeneli ndi pafupifupi $671 miliyoni pa ola limodzi (makilomita biliyoni imodzi pa ola limodzi). Liwiro limeneli limatchedwa liwiro la kuwala. Liwiro limeneli ndi lachangu kwambiri kuposa liwiro la mafunde a phokoso nthawi miliyoni imodzi. Liwiro la kuwala lingalembedwe mu equation ya "C". Tidzayesa kutalika kwa nthawi mu mamita, masekondi, ndi ma kilogalamu. Ma equation amtsogolo omwe tiyenera kukumbukira.
Tisanatchule kuchuluka kwa mafunde, tiyenera kufotokoza tanthauzo la mafunde amagetsi. Uwu ndi mphamvu yamagetsi yomwe imafalikira kutali ndi gwero lina (antenna, dzuwa, nsanja ya wailesi, chilichonse). Kuyenda mu mphamvu yamagetsi kumakhala ndi mphamvu yamagetsi yogwirizana nayo. Minda iwiriyi imapanga mphamvu yamagetsi.
Chilengedwe chimalola mafunde awa kukhala ndi mawonekedwe aliwonse. Koma mawonekedwe ofunikira kwambiri ndi mafunde a sine. Izi zalembedwa mu Chithunzi 1. Mafunde amagetsi amasiyana malinga ndi malo ndi nthawi. Kusintha kwa malo kwawonetsedwa mu Chithunzi 1. Kusintha kwa nthawi kwawonetsedwa mu Chithunzi 2.
chithunzi 1. Sine wave yajambulidwa ngati cholinga cha malo.
chithunzi 2. Fotokozani mafunde a sine ngati nthawi.
Mafunde ndi ozungulira nthawi ndi nthawi. Mafunde amabwereza kamodzi pa sekondi iliyonse mu mawonekedwe a "T". Polembedwa ngati ntchito mumlengalenga, chiwerengero cha mamita pambuyo pa kubwerezabwereza kwa mafunde chaperekedwa apa:
Izi zimatchedwa wavelength. Mafupipafupi (olembedwa "F") ndi chiwerengero cha mafunde athunthu omwe mafunde amamaliza mu sekondi imodzi (maulendo a zaka mazana awiri amawonedwa ngati nthawi yolembedwa 200 Hz kapena 200 "hertz" pa sekondi). Mwa masamu, iyi ndi njira yolembedwa pansipa.
Kuthamanga kwa munthu kumadalira kukula kwa sitepe yake (kutalika kwa mafunde) kochulukitsidwa ndi liwiro la masitepe ake (mafupipafupi). Kuyenda kwa mafunde kumafanana ndi liwiro. Kuthamanga kwa mafunde ("F") kochulukitsidwa ndi kukula kwa masitepe omwe mafunde amatenga nthawi iliyonse ( ) ikupereka liwiro. Njira yotsatirayi iyenera kukumbukiridwa:
Mwachidule, ma frequency ndi muyeso wa liwiro lomwe mafunde amasinthasintha. Mafunde onse amagetsi amayenda pa liwiro lomwelo. Chifukwa chake, ngati mafunde amagetsi amasinthasintha mofulumira kuposa mafunde, mafunde othamanga ayeneranso kukhala ndi mafunde afupiafupi. Mafunde ataliatali amatanthauza ma frequency otsika.
Nthawi yotumizira: Disembala-01-2023
