Radio - yotani? Mfundo kufala mbendera

Sindingakhoze kukuuzani inu momwe zofunika wailesi mu dziko lero. Ndi chiyani icho? tanthawuzo limanena kuti ali mmodzi wa HIV njira mtunda kudzera mafunde mu atomu. Nthawi zambiri mawuwa akusonyeza chipangizo kuti kupangidwa ndi Russian asayansi Popovym Aleksandrom Stepanovichem 1895. Ndipo kuyambira pamenepo, izo sanataye kufunika kwake.

Khwelero mu mbiriyakale

nkhani pawailesi ya moyo sangakhale anthu anakokomeza. Izo analengedwa ndi asayansi Russian kwa chipangizo chakupulumutsa mazana a moyo ku ngozi ya "Titanic" - iwo anali kutumiza kupulumutsidwa chizindikiro.

A. S. Popov anayamba kuchita zinthu zatsopano kubwerera mu 1889. Kutulukira wake anakhazikitsa pa nkhani ya sayansi German Genriha Rudolfa hedzi a magetsi mafunde, imene kunali kukwaniritsa maonekedwe a mphamvu nsakali kwambiri. Mu 1894, chifukwa Popov analengera chipangizo choyamba.

Patapita panali wailesi kwambiri. Izi zinachitika mu 1895. Kufunafuna kumapangitsanso zizindikiro m'minda atomu, anayambitsa amagwiritsa kumveka chodabwitsa. Ndipo kwa kalembera wa zizindikiro opatsirana likukhudza coherer - galasi chubu ndi filings zitsulo, zimene zingathe kusintha kukana ake. Kuyambira nthawi imeneyo ayamba nyengo ya umisiri wailesi.

Mfundo kufala mbendera

dziko lonse masiku ano zikhale zochokera zida zamagetsi, amene amalamulidwa ndi chizindikiro wailesi mphamvu. Ndipo pofuna kumvetsa zimene wailesi, muyenera kumvetsetsa mfundo za ntchito chipangizo.

Pa mbali kufalitsa ndipamene mkulu pafupipafupi chonyamulira chizindikiro cha pafupipafupi zina, limene superimposed pa otaya zambiri. Kodi modulated. njira United wa mphepo panamveka ndi kupatsira mlongoti amalowa danga.

chizindikiro poona chipangizo

Malo akutali a mbendera gwero anatumidwa ndi wailesi kulandira mlongoti akagwidwa. Sitepe m'pamene wailesi pafupipafupi chizindikiro processing kuti kumachitika panthawi:

1. Kusinthasintha m'minda mu atomu amapanga mafunde magetsi mu wolandila lapansi.
2. Low-mphamvu magetsi inawadutsa ndi osasankhidwa kuthetsa chopinga ndiponso kudziwa mfundo zothandiza.
3. "Kutsukidwa" chizindikiro ndi decoded, wapezeka, mfundo zothandiza adzamasulidwa.
4. Kodi n'kukhala ndi ya view wailesi-wochezeka chipangizo cha phokoso, m'chifanizo, video.

Nthawi zambiri, pamaso decoding mbendera umadutsa ambiri zipangizo - amplifiers, converters pafupipafupi - ndi pansi digitizing processing pulogalamu. Ndiyeno yekha tidzatha kumvetsa zimene timaphunzira ndi wailesi. Izi imodzi timapitiriza maganizo a khalidwe ndi zambiri.

Radio mu dziko lamakono

Masiku ano, wailesi wataya kutchuka kwake - kumvetsera nyimbo, kulankhulana ndi achibale kutali, kulandira uthenga ntchito zina zamakono zapamwamba. Koma zaka 40 zapitazo chipangizo uyu anali limafotokoza zosangalatsa. Radio madzulo yaitali anasonkhana banja, anzawo, magulu.

Siteshoni woyamba wailesi anabwerera mu 1907 ku New York. Lee De Forest anapanga kulengeza nsanja. Komabe, nthawi zonse kusintha malo wailesi. Ndi mochedwa kukula mu kutchuka njira zatsopano zosangalatsa. Patapita zaka khumi siteshoni anayamba kuoneka m'mayiko European - Czechoslovakia, Ireland, Holland. Ndipo pambuyo 20 ntchentche, iwo zili ponseponse. Ndi kukhala lero.

Tsopano Internet wailesi yotchuka kwambiri. Ndi chiyani icho? Ndipotu, yemweyo Kuwulutsa music, uthenga, koma mtunda opatsirana kudzera ndondomeko lonse maukonde. Koma chifukwa chitukuko mosalekeza la mauthenga deta, ndipo posakhalitsa njira ya wailesi likuchotsedwa m'miyoyo yathu.