Imimandla yexesha

Ngokusekwe kulwazi olukhutshwe kwifayile ye- Ukulungelelanisa imephu Singasebenzisa i-zero meridian okanye iGreenwich meridian ukuze sikwazi ukwahlula umhlaba ube ngamacandelo angama-24 esiwaziyo njengemimandla yexesha. Imimandla yexesha yile migca yokucinga apho sahlulahlula umhlaba khona ukuze simisele ukwahlula ixesha kwaye sisixhobo esisebenzayo ukuze sikwazi ukuhlela ixesha kwihlabathi liphela.

Kule nqaku siza kukuxelela ukuba isebenza njani imimandla yamaxesha kwaye ibaluleke kangakanani.

Athini amaxesha emimandla

Kuba iplanethi yethu iqhubeka ijikeleza kuyo ayifani ngexesha elinye kwenye iplanethi kwenye. Nangona kukhanya eSpain, kusakhanya kwilizwekazi laseMelika. Ke ngoko, ukuba sifuna ukumisela ishedyuli yomntu wonke, kufuneka sithathele ingqalelo lo mahluko. Kungenxa yoko le nto imimandla yexesha iphuhlisiwe.

Imimandla yexesha izalwa ngokwahlulahlula iplanethi yethu ibe ngamacandelo angama-24 kusetyenziswa i-zero meridian njengesalathiso. Imibhalo yeMeridian inokufumaneka kwimephu yokulungelelanisa. Oku kuba sisixhobo esisebenzayo sokukunceda uququzelele ixesha lakho. Ixesha ngalinye lilinganisa iidigri ezili-15. Oku kuthetha ukuba ukuze kwahlulwe iidigri ezingama-360 zomhlaba, kufuneka kwenziwe amacandelo angama-24. Icandelo ngalinye liya kubonisa inani leeyure elizithathayo ukuze umhlaba ujikeleze i-axis yawo. Le yindlela esitsho ngayo ukuba ithatha njani usuku ukujika.

Iidigri ezili-15 ezilinganiswe ngokwexesha ngalinye kwinto eyahlulwe kwiplanethi, iyahambelana neyure enye. Ke ngoko, phakathi kwamacandelo angama-24 apho umhlaba wahlulwe umhlaba uhambelana neeyure ezingama-24 ngosuku.

Babalwa njani

Imephu yexesha lendawo

Ukumisela ishedyuli engqinelanayo kwiplanethi yonke, imimandla yexesha kufuneka ibalwe ngokuchanekileyo. Imimandla yexesha ilawulwa ngumgangatho wexesha owaziwa njenge-UTC (Ixesha eliDibeneyo leLizwe liphela). Ezi zilungelelaniso zexesha lehlabathi zinokufumaneka nakwixesha leatom yamanye amazwe. Eli xesha ngumgangatho wobunzululwazi ozama ukulinganisa ixesha elidlula kwiiwotshi zeatom kunye namanqaku ahlukeneyo eplanethi abaliwe. Okwangoku, yeyona modeli ichanekileyo yokubala ixesha.

Imimandla yexesha kwiplanethi iyabalwa usebenzisa njengereferensi ye-zero Meridian ebekwe eLondon. Ukusuka kweli zeridi yokulinganisa ukuya empuma idibanisa ukuya kwiyure enye kwindawo nganye yexesha. Ngokuchasene noko, ukusuka kwi-zero meridian ukuya entshona iyure enye iyakhutshwa. Umlinganiselo wokongeza okanye wokuthabatha ngeyure uxhomekeke kukujikeleza komhlaba. Kwaye kukuba iplanethi ijikeleza kwicala ukusuka entshona ukuya empuma. Ngesi sizathu, ukubalwa kweeyure zokujija ezihamba kweli cala kuthiwa kukuphambuka okuhle, ngelixa izixhobo zokubala ezibalwa kwicala elichaseneyo, oko kukuthi, entshona, zibizwa ngokuba kukuphambuka okungalunganga.

 Imizekelo yamaxesha

Siza kubonisa imizekelo yemimandla yamaxesha ukulungiselela ukuqonda. Ungalibala ngokukhawuleza ixesha kwisixeko esithile kwingingqi ngokwazi ixesha laso. Kuya kufuneka ukhumbule ukuba lo mmandla awunakho ukuthabatha iiyure okanye ukuba kulungile ukongeza iiyure. Nantsi eminye imizekelo:

Ezinye zeedolophu ezihambelana ne-zero meridian zinemimandla yexesha I-UTC ± 00:00 kwaye umzekelo iMali, i-Ivory Coast, iGreenland, iMauritania, iGambia, nePortugal, phakathi kwabanye.

Ezinye iidolophu ezinendawo yexesha i-UTC -05: 00 (iiyure ezintlanu ngasemva) yiMexico, iColombia, iCanada, iPeru kunye neminye imimandla yaseBrazil. Kule meko, siyabona ukuba ixesha le-negative lithetha njani kwaye kuthetha ukuba iiyure ezintlanu mazisuswe kwixesha eliboniswe yi-zero meridian. Ukuba kwiindawo ezifumaneka kwi-meridian yi-10 ebusuku, kuyo yonke imimandla eneli xesha langoku iya kuba yi-5 emva kwemini.

Siza kubona eminye imizekelo egqithileyo enje nge-UTC -12: 00 (iiyure ezilishumi elinambini ngaphantsi): apha sifumana iBaker Island kunye neHolland Island. Apha siyabona ukuba ikwi-zero meridian ngu-7 emva kwemini, kwezi ziqithi iya kuba sisi-7 kusasa.

Ngoku siya kwelinye icala apho kufuneka sidibanise iiyure. Ngommandla wexesha we-UTC +06: 00 (iiyure ezintandathu ngaphezulu) sifumana iBangladesh, iRussia ne-Bhutan, phakathi kwabanye. Apha siyabona ukuba bakhonza imeridiya kodwa ngaba 9 kusasa, kula mazwe iya kuba yi-3 emva kwemini.

Zenzelwe ntoni

utshintsho lwemisebenzi ngokwexesha lexesha

Abantu abaninzi bayazibuza ukuba yeyiphi imimandla yexesha. Eyona njongo iphambili kukukwazi ukwenza ixesha kwihlabathi liphela. Iiyure zisekwe kwii-meridians ezahlukeneyo njengoko kugqitywe ngabasemagunyeni belizwe ngalinye okanye ubumelwane. Uhlobo ngalunye lommandla wexesha lineziphumo ezithile kubomi bemihla ngemihla belizwe ngalinye.

Ngolu hlobo lwenkqubo yenkqubo yexesha, sifumana umlinganiso wexesha leeyure ezingama-24 zosuku olulawulwa ukusuka kwi-zero meridian. Yile ndlela kuba lula ngayo kunye nokusebenza ngakumbi ukubala iiyure kwindawo nganye. Inyathelo lokwenza ixesha lehlabathi kodwa lilawulwa yimimandla yexesha kwaye kuxhomekeke kwi-zero meridian yayivela Injineli yaseScotland-Canada uSandford Fleming. Ukudalwa kwale ndlela yokulinganisa ixesha kwiplanethi yonke kwenzeka ngasekupheleni kwenkulungwane ye-XNUMX.

Kuba lukhona olu tshintsho lwamaxesha kuxhomekeke kwindawo yomhlaba apho sikhona, kukho into eyaziwa njengeJet lag. Imalunga nokulungiswa gwenxa kweeshedyuli ezahlukeneyo kunye nothando kwizingqisho ezijikelezayo zabantu ababini abahamba rhoqo. Umzekelo, kubahambi beenqwelomoya kunye nabaqhubi beenqwelomoya le Jet lag ihlala ibachaphazela kancinci kubomi babo bemihla ngemihla. Kungenxa yokuba, xa befika kwilizwe elikude nemvelaphi yabo, ishedyuli ayifani, kwaye imisebenzi ayenziwa kuyo.

Ndiyathemba ukuba ngolu lwazi unokufunda ngakumbi malunga namaxesha ahlukeneyo.


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