Ukuhlaziywa Kwamagagasi Aguqukile Nase-Longitudinal
Amagagasi ayizinto ezibonakalayo lapho amandla edluliselwa khona ngokusebenzisa indlela (noma ngisho ne-vacuum) ukusuka kwenye indawo kuya kwenye. Amagagasi adlala indima ebalulekile ezicini eziningi zokuphila kwansuku zonke, kusukela emisindweni esiyizwayo kuya elangeni elinikeza ukukhanya namandla. Kunezinhlobo ezimbili eziyinhloko zamagagasi ezisekelwe esiqondisweni sokunyakaza kwezinhlayiya: amagagasi adlulayo namagagasi amade. Lesi sihloko sizoxoxa ngomehluko phakathi kwalezi zinhlobo ezimbili zamagagasi, izici zawo, ukusetshenziswa kwawo, kanye nezibonelo zangempela.
Amagagasi Aguqukile
Incazelo kanye nezibonelo
Igagasi elihambayo ligagasi lapho izinhlayiya ze-medium zinyakaza ziqonde ngqo endaweni yokusabalala. Ngamanye amazwi, uma igagasi lihamba liye kwesokudla, izinhlayiya eziku-medium zizonyakaza phezulu naphansi. Izibonelo zakudala zamagagasi ahambayo amagagasi angaphezulu kwamanzi namagagasi okukhanya.
Isici
1. Ububanzi: Kugagasi eliphambene, ubukhulu buyibanga eliphakeme kakhulu lenhlayiya ye-medium ukusuka endaweni yayo yokulingana (phakathi nendawo). Ububanzi bunquma amandla wegagasi—lapho ubukhulu bukhula, kulapho amandla athwalwa khona emakhulu.
2. Ubude begagasi (λ): Ubude begagasi ibanga eliphakathi kwamaphuzu amabili alandelanayo asesigabeni esifanayo, isibonelo iziqongo ezimbili noma izigodi ezimbili.
3. Imvamisa (f): Imvamisa inani lamagagasi adlula iphuzu elinikeziwe ngeyunithi yesikhathi, ngokuvamile elilinganiswa nge-Hertz (Hz).
4. Isivinini (v): Isivinini samagagasi yisilinganiso lapho igagasi lisakazeka khona ngokusebenzisa indlela ephakathi nendawo, esibalwa ngesibalo v = f λ.
Isicelo
Lawa magagasi adlulayo anezinhlelo zokusebenza ezahlukahlukene ezibalulekile, ikakhulukazi ku-optics kanye nokuxhumana. Nazi ezinye izibonelo:
1. Amagagasi E-Electromagnetic: Ukukhanya, okuhlanganisa amagagasi e-infrared, e-ultraviolet, kanye nomsakazo, amagagasi anqamulayo angadingi i-medium ukuze asakazeke.
2. Ukutholwa Kokuzamazama Komhlaba: Nakuba amagagasi okuzamazama komhlaba ahlanganisa zombili izinhlobo zamagagasi, amagagasi e-S (amagagasi e-Shear) angamagagasi anqamulayo ahlinzeka ngolwazi olubalulekile ekutholakaleni nasekuhlaziyweni kokuzamazama komhlaba.
3. Ubuchwepheshe be-Fiber Optic: Ukukhanya okuhamba nge-fiber optical kuyisibonelo sangempela samagagasi ajikelezayo. Lobu buchwepheshe buvumela ukuxhumana kwedatha okusheshayo nokuphumelelayo.
Amagagasi Ade
Incazelo kanye nezibonelo
Amagagasi amade angamagagasi lapho izinhlayiya ze-medium zidlidliza zihambisana nesiqondiso sokusabalala kwamagagasi. Isibonelo esivame kakhulu segagasi elide igagasi lomsindo. Uma igagasi lihamba liye kwesokudla, izinhlayiya eziku-medium zizodlidliza ziye emuva naphambili, kanye nakwesokudla nakwesobunxele.
Isici
1. Ukucindezela kanye Nokungavamile: Amagagasi e-longitudinal aqukethe izifunda lapho izinhlayiya ze-medium zicindezelwa khona (ukucindezela) kanye nezifunda lapho lezi zinhlayiya zisakazeke khona kakhulu (ukungalingani).
2. Ububanzi: Ububanzi begagasi elide bulinganiswa ngokuthi ukucindezela kanye nokungatholakali kahle kuqhathaniswa kangakanani nendawo yokulingana.
3. Ubude be-Wave (λ): Kumagagasi amade, ubude be-wave bulinganiswa njengebanga eliphakathi kwamaphuzu amabili okucindezela alandelanayo noma amaphuzu amabili alandelanayo e-rarefaction.
4. Imvamisa (f) kanye nesivinini (v): Njengakumagagasi ajikelezayo, imvamisa kanye nesivinini nakho kulinganiswa kusetshenziswa i-equation efanayo, okungukuthi v = f λ.
Isicelo
Nakuba evame ukunganakwa uma kuqhathaniswa namagagasi anqamulayo, amagagasi amade anezinhlelo zokusebenza eziningi nezibalulekile. Nazi ezinye izibonelo:
1. Amaza Omsindo: Ukusetshenziswa okusobala kakhulu kwamaza ajikelezayo umsindo. Ukuxhumana ngamazwi, umculo, kanye nemiphumela yomsindo konke kuncike kumaza omsindo ahamba emoyeni noma kwezinye izindlela.
2. I-Ultrasonic: Amagagasi e-Ultrasonic angamagagasi amade anamaza angaphezu komkhawulo wokuzwa komuntu. Izinhlelo zokusebenza ze-Ultrasonic zifaka ubuchwepheshe bezithombe zezokwelapha (i-ultrasound), i-sonar yokuzulazula ngaphansi kwamanzi kanye nokutholwa kwezinto, kanye nokuhlanza nge-ultrasound.
3. Ukuhlolwa Okungonakalisi: Kule ndlela, amaza amade asetshenziswa ukuthola amaphutha noma ukungapheleli ezintweni ngaphandle kokuzilimaza. Izindlela ezifana nokutholwa kwamaphutha e-ultrasonic zisebenzisa izimiso zamaza amade.
Ukuhlaziywa Kokuqhathanisa
Umehluko Obalulekile
1. Isiqondiso Sokudlidliza Kwezinhlayiyana: Kumagagasi ajikelezayo, izinhlayiya ziyadlidliza ziqonde ngqo ohlangothini lokunyakaza kwamagagasi, kuyilapho kumagagasi amade, izinhlayiya ziyadlidliza zihambisana nohlangothi lokunyakaza kwamagagasi.
2. I-Propagation Medium: Amagagasi adlulayo avame ukutholakala ezindaweni ezisekela ukucheba, njengeziqinile kanye nezindawo eziwuketshezi. Ngokuphambene nalokho, amagagasi amade angasakazeka ngezinto eziqinile, uketshezi kanye namagesi.
3. Ukwakheka Kwamagagasi: Amagagasi aguquguqukayo aqukethe ama-crests nama-trough, kuyilapho amagagasi amade equkethe ukucindezela kanye nokungatholakali kalula.
Ukuba khona kweGagasi Lesibili
Ezimweni eziningi, lezi zinhlobo ezimbili zamagagasi zenzeka ndawonye. Isibonelo, ukuzamazama komhlaba kukhiqiza amagagasi ahambayo (ama-S-wave) kanye namagagasi amade (ama-P-wave). Ukuhlaziywa kwalezi zinhlobo ezimbili zamagagasi kunikeza ulwazi olubalulekile mayelana nezici zokuzamazama komhlaba kanye nesakhiwo sangaphakathi soMhlaba.
Ukusebenzisana kanye ne-Superposition
Womabili amagagasi ajikelezayo kanye nalawo ahlala isikhathi eside angasebenzisana ngesimiso sokuma phezulu, lapho amagagasi amabili noma ngaphezulu ehlangana khona ukuze akhiqize inhlanganisela eyisamba samagagasi awo ngamanye. Lokhu kubalulekile ezindleleni ezahlukahlukene ezisebenzayo, njengezindlebe ezivala umsindo, ezisebenzisa ukuphazamiseka okubhubhisayo kwamagagasi omsindo ukunciphisa umsindo.
Isiphetho
Amagagasi adlulayo nawayindilinga ayizinto ezibalulekile ezibonakalayo ezinezinhlobo eziningi zokusetshenziswa, kusukela kwezokwelapha kuya kwezokuxhumana kanye nobunjiniyela. Ukuqonda izici nomehluko phakathi kwalezi zinhlobo ezimbili zamagagasi kuvula amathuba amaningi okusungula izinto ezintsha kwezobuchwepheshe kanye nocwaningo olwengeziwe. Sekukonke, la magagasi awagcini nje ngokudlala indima ebalulekile empilweni yansuku zonke kodwa futhi anegalelo ekuthuthukisweni kwesayensi nobuchwepheshe.
