Radio - Yintoni le? Umgaqo ukudluliselwa uphawu

Kukuxelela indlela ebalulekileyo irediyo ehlabathini namhlanje. Yintoni na? Le nkcazelo ithi ukuba yenye iindlela Umgama igciwane amaza. Amaxesha amaninzi, eli gama ibonisa isixhobo ukuba yaqanjwa zizazinzulu Russian Popovym Aleksandrom Stepanovichem 1895. Kwaye ukusukela ngoko, iye andilahlekwanga ukufaneleka kwayo.

Step umlando

imicimbi radio ebomini kuba ngabantu zabaxwa. It wadalwa zizazinzulu IsiRashiya ukuya kwisixhobo isindise amakhulu abantu ukusuka ngozi le "Titanic" - kwakufuneka ukuthumela uphawu yohlangulo.

A. S. Popov waqala ukuhlola wakhe ngo-1889. Lento yakhe waliseka phezu kumava-nzulu German amaza zombane Genriha Rudolfa Hertz kaThixo, ngexesha kwayo ukufezekisa imbonakalo iintlantsi ngegunya. Ngowe-1894, ngokuba Popov uyile icebo lokuqala.

Emva kwethutyana kwakukho kakhulu unomathotholo. Oku kwenzeka ngo-1895. Efuna ukuphucula maza kuMacandelo umoya, umqambi usebenzisa simanga ekuvakaleni kwelizwi. Yaye nokubhaliswa ukuva kuyasebenza coherer - umbhobho yeglasi imvuthuluka yesinyithi, nto leyo ukutshintsha ukuqina kwayo. Ukususela ngelo xesha iqala ilixa kobuchwepheshe radio.

Umgaqo ukudluliselwa uphawu

Lonke ihlabathi lanamhlanje kusekelwa izixhobo zekhompyutha, nelawulwa yi iisignali zerediyo igunya. Kwaye ukuze baqonde oko irediyo, kufuneka baqonde imigaqo yokusebenza kwefowuni.

Kwi cala yokusasaza le yakha a aqhelekileyo carrier umqondiso ezineqondo ethile, nto leyo ke enyanzeliswa phezu kolwazi. Ngaba modulated. ngendlela emanyeneyo amaza erediyo ekhutshwa yi-eriyali yokusasaza lungena ngokukhululekileyo isithuba.

device uphawu uyasabela

Indawo esemagqagaleni uphawu source ethunyelwe kunomathotholo ukwamkelwa eriyali kuthinjwa. Eli nyathelo kuphawula processing uphawu sokuquqa kwerediyo okwenzeka ngokwamanqanaba:

1. Eguquguqukayo emasimini kagesi yenza kwemisinga zombane kwisamkeli.
2. Elisezantsi amandla-Umsinga wombane zahluzwa ukuphelisa uphazamiso kwaye ukuchonga ulwazi luncedo.
3. Imiqondiso "Nyibilikisa" ukuba decoded, elibhaqiweyo, uyakhululwa ulwazi luncedo.
4. Iguqulelwa iseti radio-friendly Ngenxa ukuba isixhobo silungele isandi, umfanekiso, ividiyo.

Kwiimeko ezininzi, phambi kokuba zokucazulula uphawu udlula inani elikhulu izixhobo - yokukhulisa, converters rhoqo - ize ke inyanzeleke ukuba idijithali inkqubo processing. Kwaye ngoko kuphela siya kuba nako ukuqonda iinkcukacha ezifunyenwe yi kunomathotholo. Oku ngaxeshanye kwandisa imbono umgangatho kunye nolwazi.

Radio kutshanje

Kwihlabathi lanamhlanje, unomathotholo uphulukene kwayo - ukumamela umculo, ukunxibelelana kunye nezalamane evela kude, ukufumana iindaba kusetyenziswa elektroniki obuchwepheshe. Kodwa ke kwiminyaka engama-40 eyadlulayo lentwana lo mthombo wolwazi zokuzonwabisa. Radio ebusuku elide behlanganisene usapho, abahlobo, amaqela.

Kwisikhululo sikanomathotholo yokuqala wabuya ngowe-1907 e-New York. Lee De Forest wenza nenqaba losasazo. Nangona kunjalo, lo rhoqo ukutshintsha indawo kunomathotholo. It lwanciphisa phantsi ukukhula ukuthandwa ezintsha zokuzonwabisa. kweminyaka elishumi kamva isikhululo yaqala ukuvela kumazwe aseYurophu - eCzechoslovakia, Ireland, eHolland. Kwaye emva kokuba imi--20, ukuba kwande. Baze baphuhlise unanamhla.

Ngoku ethandwa kakhulu Internet kunomathotholo. Yintoni na? Enyanisweni, lo usasazo umculo enye, iindaba, kodwa umgama ezosulela ngokusebenzisa neenkqubo jikelele. Kodwa ngenxa yokuba uphuhliso oluqhubekayo woqhakamshelwano data, yaye kungekudala le ndlela ezosasazo bungaveli ebomini bethu.