Ithonya Lamandla Adonsela Phansi Ngesikhathi
Amandla adonsela phansi nesikhathi, izici ezimbili eziyisisekelo zendawo yonke yethu, zinobudlelwano obuyinkimbinkimbi nobuxhumene. Ukuqonda lobu budlelwano kushintshe kakhulu kusukela ezinsukwini zikaSir Isaac Newton kuya emibonweni yoguquko eyaphakanyiswa u-Albert Einstein. Lesi sihloko sigxila ethonyeni elijulile amandla adonsela phansi analo ngesikhathi, sihlola imiqondo efana nokwanda kwesikhathi samandla adonsela phansi, ukuhlobana okujwayelekile, nokuthi le mibono ibonwe futhi yahlolwa kanjani endaweni yonke yethu.
Isisekelo: Amandla Adonsela Phansi AseNewtonian
Ngokomlando, amandla adonsela phansi aqondwa ngokuphelele nguSir Isaac Newton ngekhulu le-17. Umthetho kaNewton wokudonsa phansi komhlaba wonke wawuthi yonke inqwaba inamandla okukhanga kuyo yonke eminye inqwaba. Nakuba izibalo zakhe zichaza ngokunembile amandla adonsela phansi athinta izinto ngokunemba okukhulu, amandla adonsela phansi aseNewtonian awazange acabangele umphumela wamandla adonsela phansi ngesikhathi. Isikhathi, ngokobuchwepheshe baseNewtonian, siphelele, asishintshi, futhi siyafana kubo bonke ababuki, kungakhathaliseki ukuthi bakuphi endaweni yonke.
Ukugxuma Okuvukelayo: Ubudlelwano Obujwayelekile buka-Einstein
Ekuqaleni kwekhulu lama-20 kwabonakala ushintsho olukhulu endleleni yokucabanga kuka-Albert Einstein yokuhlobana okujwayelekile. Lo mbono washintsha kakhulu indlela esiqonda ngayo amandla adonsela phansi, isikhala nesikhathi. Ngokusho kuka-Einstein, amandla adonsela phansi akuwona amandla asetshenziswa yizinqwaba kodwa kunalokho ukugoba kwesikhathi sesikhala okubangelwa ukuba khona kwesisindo namandla.
Embonweni wakhe ojwayelekile wokuhlobana kwezinto, u-Einstein wasikisela ukuthi lokho esikubona njengokudonsa izinto kuvela ekuguqukeni kwesikhathi sendawo sizungeze izinto ezinkulu. Lokhu kugoba kuthinta izindlela ezithathwa yizinto, okwenza zibonakale zikhangana ngendlela elingisa amandla adonsela phansi aseNewton. Ngaphezu kwalokho, esinye sezibikezelo ezimangalisayo zokuhlobana kwezinto jikelele kwakuwukwanda kwesikhathi samandla adonsela phansi, umqondo wokuthi isikhathi sidlula kancane emasimini anamandla adonsela phansi.
I-Gravitation Time Dilation
Ukwanda kwesikhathi samandla adonsela phansi kuyisenzakalo lapho isikhathi sihamba kancane ezindaweni ezinamandla adonsela phansi aphezulu. Lo mphumela uvela ekugobeni kwesikhathi sesikhala. Lapho into iseduze nomzimba omkhulu, isikhathi sesikhala sigobile kakhulu, futhi isikhathi samandla adonsela phansi siba sikhulu. Ngokuphambene nalokho, isikhathi sidlula ngokushesha ezindaweni ezinamandla adonsela phansi abuthakathaka, kude nezinto ezinkulu.
Isibonelo esisebenzayo singatholakala eduze koMhlaba. Amawashi e-athomu anembile kakhulu abekwe ezindaweni ezahlukene zokuphakama abonisa imiphumela yokwandiswa kwesikhathi. Amawashi ezindaweni eziphakeme (okukude kakhulu nesikhungo soMhlaba futhi ngaleyo ndlela abhekane namandla adonsela phansi abuthakathaka) ashaya ngokushesha uma kuqhathaniswa namawashi asezingeni lolwandle. Lo mphumela, nakuba umncane kakhulu, ulinganiswe futhi waqinisekiswa ngokuhlolwa okuhlukahlukene, njengalawo ahilela amawashi e-athomu ahambisanayo ezindizeni, kumarokhethi, nakuma-satellite.
Uhlelo Lokubeka Indawo Lomhlaba Wonke: ITestamente Lobuchwepheshe
Esinye seziqinisekiso ezibaluleke kakhulu zokwandiswa kwesikhathi samandla adonsela phansi ukusebenza kwe-Global Positioning System (GPS). Ama-satellite e-GPS azungeza uMhlaba futhi angaphansi kokwandiswa kwesikhathi okukhethekile kwe-relativistic, ngenxa yejubane lawo eliphezulu, kanye nokwandiswa kwesikhathi okujwayelekile kwe-relativistic, ngenxa yamandla adonsela phansi abuthakathaka ezindleleni zawo ze-orbital uma kuqhathaniswa nobuso boMhlaba.
Ngaphandle kokubala le miphumela yokuhlobana kwezinto, ukubalwa kwe-GPS kungaba okungalungile ngokushesha, okuholela emaphutheni amakhilomitha amaningana ekubekweni ngesikhathi esifushane. Onjiniyela kumele bafake ukulungiswa ukuze balungise kokubili ukusonteka kwemiphumela yokwanda kwesikhathi kanye nesikhathi okubikezelwe ngokuhlobana kwezinto okujwayelekile. Lokhu kusetshenziswa okusebenzayo kufakazela ukunemba kanye nesidingo semfundiso ka-Einstein kwezobuchwepheshe besimanje.
Ama-Black Holes: Amandla Adonsela Phansi Nesikhathi Esikhulu
Imigodi emnyama, izindawo zesikhala lapho amandla adonsela phansi enamandla khona kangangokuthi ngisho nokukhanya akukwazi ukuphuma, kunikeza izimo ezimbi kakhulu ukuze kuhlolwe kabanzi ithonya lamandla adonsela phansi ngesikhathi. Eduze komphetho wesigameko somgodi omnyama, ukwanda kwesikhathi samandla adonsela phansi kuba yinto ebaluleke kakhulu. Umqapheli okude nomgodi omnyama angabona isikhathi emphethoni wesigameko njengesicishe sime, kuyilapho umqapheli oseduze komphetho wesigameko ezwa isikhathi sidlula ngesivinini esincane kakhulu.
Lokhu kwandiswa kwesikhathi okuphawulekayo kunemiphumela ejulile ekuqondeni uhlobo lwesikhala kanye nendawo yonke. Ucwaningo lwemigodi emnyama luhlala luwumngcele we-astrophysics yanamuhla, okunikeza ukuqonda ngokuziphatha kwesikhathi kanye namandla adonsela phansi ngaphansi kwezimo ezimbi kakhulu.
Ukuqinisekiswa Kokuhlola kanye Nokuqaphelwa Kwendawo Yonke
Ukuhlolwa okuhlukahlukene kuqinisekisile izibikezelo zokuhlobana okuvamile kanye nokwanda kwesikhathi samandla adonsela phansi. Ukuhlolwa okuphawulekayo kwakuhilela ukuthutha amawashi e-athomu anembe kakhulu endizeni. Lapho beqhathanisa lawa mawashi nalawo asemhlabeni, ososayensi baphawula umehluko okulindelekile esikhathini esidlule, okuhambisana nezibikezelo zokuhlobana.
Ukubonwa kwendawo yonke nakho kunikeza ubufakazi bokwanda kwesikhathi samandla adonsela phansi. Isibonelo, ukukhanya okuvela ezinkanyezini noma ezikhungweni ze-galactic okugoba nxazonke zezinto ezinkulu njengemithala noma amaqoqo kubonisa ukugoba kwesikhathi sesikhala okubikezelwe ngokuhlobana okuvamile. Ucwaningo olunembile lwalezi zimo luyaqhubeka nokuqinisekisa ithonya lamandla adonsela phansi ekuhambeni kwesikhathi.
Ngale Kokuhlobana Okujwayelekile: Imibono Yokudonsela Phansi Kwe-Quantum
Nakuba ubudlelwano obujwayelekile bumelane nokuhlolwa okunzima futhi bunikeze ukuqonda okujulile ngesimo sesikhathi sendawo kanye namandla adonsela phansi, akuyona inkolelo-mbono ephelele. Ukufuna ukuqonda izici ze-quantum zamandla adonsela phansi, ngakho-ke isikhathi, kusalokhu kuyinselele enkulu ku-physics yanamuhla. Ukufuna inkolelo-mbono ehlangene, evame ukubizwa ngokuthi amandla adonsela phansi e-quantum, kuhlose ukuvumelanisa izimiso zobudlelwano obujwayelekile nalezo ze-quantum mechanics.
Abantu abangaba khona bethiyori ye-quantum gravity bahlanganisa ithiyori yezintambo kanye ne-loop quantum gravity. Le mibono ihlose ukuchaza indwangu ye-spacetime ezikalini ezincane kakhulu futhi ihlanganise ukubalwa kwemiphumela yamandla adonsela phansi. Ukuqonda ukuthi amandla adonsela phansi abumba kanjani isikhathi kula mazinga e-quantum kungavula iminyango emisha ekuqondeni kwethu indawo yonke.
Isiphetho
Ithonya lamandla adonsela phansi ngesikhathi lingenye yezici ezithakazelisayo kakhulu zendawo yonke yethu, lishintsha kakhulu indlela esibona ngayo iqiniso. Kusukela emibonweni eyisisekelo kaNewton kuya ekuqondeni okuguqukile kuka-Einstein, ukuqonda kwethu amandla adonsela phansi nesikhathi kushintshe kakhulu. Ukwanda kwesikhathi samandla adonsela phansi kunikeza isango lokuqonda ukuxhumana okujulile phakathi kwesikhathi sesikhala namandla adonsela phansi, okuqinisekiswa ukuhlolwa kanye nokubonwa kwendawo yonke.
Njengoba sibheke esikhathini esizayo, ukuhlola amandla adonsela phansi e-quantum kunesithembiso sokwembula izimfihlakalo zesikhathi namandla adonsela phansi. Ukuphishekela ulwazi okungapheli kulesi sigaba kubonisa ilukuluku lomuntu kanye nogqozi lokuqonda ukusebenza okuyisisekelo kwendawo yonke.
