Kungani ubusuku amnyama: incazelo yesayensi

Nganoma yingasiphi yomhlaba yisikhathi lapho ukukhanya kanye nesikhathi lapho kuba mnyama. Lokhu kungenxa ngokuyinhloko inkanyiso yethu eyinhloko - ilanga. Iya esibhakabhakeni, ukushintsha amazinga okukhanya. Ngamafuphi nje, kukhona obumnyama, ngoba ilanga liyashona ngezansi emkhathizwe.

Iphuzu elithakazelisayo umbono wabantu lasendulo

Ezikhathini zasendulo, abantu bacabanga ukuthi ilanga ukuphotha kuyo yonke iplanethi yethu futhi efihla ngemuva emkhathizwe. Akekho isikhathi eside akakwazanga ngisho baphakamise ukuthi iplanethi yethu ukuphotha esikhaleni enkulukazi emhlabeni jikelele. Kuyefana nasendleleni inyanga. Ilanga nenyanga wabekwa ngomsunguli waphezulu: bona ababekhulekelwa, baletha izipho, udumo iculo nemikhosi. Kodwa ngenkathi isayensi ikufakazele ukuthi konke ngempela kwenzeka okuphambene. Umhlaba - hhayi maphakathi yonke, kodwa kuphela ingxenye encane, futhi kungani ebusuku simnyama, ongakaphathelani iyiphi ukubonakaliswa saphezulu.

Kuyini Ukujikeleza eMhlabeni nokuthi kuthinta

Kukhona ukunyakaza ezimbili kanyekanye futhi nokuhamba kwezindikimba iplanethi emkhathini: ezinyakazayo esemkhathini emhlabeni Sun futhi emhlabeni axis awo siqu, efana phezulu kwengane. Okusho ukuthi, ngesikhathi esifanayo lapho iplanethi is flying emkhathini, ke lumayelana ngokwawo, futhi lezi zici yisona sizathu esenza ebusuku simnyama kanye ngosuku - ukukhanya. Ukuhambisa eduze orbit emkhathini ephelele yokuthi-eksisi eMhlabeni uthambekele ukulokho efanayo engela degree angaba 66 - kuyimbangela kwezinkathi zonyaka "dissimilarity" yabo. Ezingxenyeni ezihlukahlukene Umhlaba, kuye ngezinga of ukushisa imisebe yokukhanya, isikhathi ushintsho ukuwa, ebusika, entwasahlobo nasehlobo. Ngakho, phakathi nawo-zindawo, wayevame wonke amasizini amane, ngokwamazinga ehlukene okujula (isibonelo, e-Italy ehlobo, njengoba ebusika ufudumele kuka eMoscow). Enkabazwe, iningi engaphansi imisebe eqondile kwelanga emini eduze engela 90 degrees, usuku ngokwengxenye 12 amahora isikhashana.

Pole kungani abandayo, yize usuku lapho izinyanga eziyisithupha?

Kuma-pole, isithombe ngokuphelele indlela ekhethekile - imisebe kwelanga ukuwa ukuze sehla futhi cishe ngokuphelele kubonakala ebusweni, ngaphandle kokuma futhi ngaphandle kokushiya ukufudumala kulo, nakuba imini nobusuku lapha zokugcina cishe izinyanga eziyisithupha ngamunye. Kungani amazwekazi aseNyakatho naseNingizimu Pole - izifunda enomoya kule planethi yethu.

Ubude ezahlukene imini nobusuku

Ukujikeleza iplanethi ezungeza ilanga, inkanyezi main kithi, ichaza zonyaka kokushintsha, kanye imini nobusuku. Ukuma eyindilinga le planethi, kanye heterogeneity komhiaba kobuso imisebe yokukhanya kubonakala umphelelisi wenze ezihlukahlukene sezulu kulamave ngendawo. Kodwa zikhona izinsuku lapho yonke zindawo kuya zone polar sekufikile usuku kokuba ukusakazwa efanayo isikhathi phakathi ingxenye ecacile futhi amnyama kosuku - Ezinsukwini kwentwasahlobo nekwindla nelanga. Ngalesi sikhathi, enkabazwe, iyiphi into uyonika isithunzi kwencani, njengoba ilanga ake emaphikweni alo i-engela 90 degrees kuya ebusweni.

Ngomqondo onabile, kungani ebusuku simnyama, yonke into icacile. Kodwa kuyathakazelisa ukuthi kukhona isikhathi eside emnyama, futhi kukhona kancane. Northern yethu Nenkabazwe libhekene ukwehla isikhathi ebusuku ka 21 Mashi (ngesikhathi sokulingana kwemini nobusuku Vernal) kuya ku-September 23 (nelanga yasebusika), kanye noHezekeli - nobusuku obude zenzeka ebusika. Ngo Nenkabazwe eningizimu isimo okuphambene nalokho.

Futhi kanjani sichaza lokhu izingane zakho?

Chazela izingane lo mkhuba lokho ebusuku simnyama, ngoba ilanga lingaphumi, avalele izinkanyezi, hhayi ukusho ngeqiniso. Phela, eqinisweni, ilanga njalo kukhanya. Akukona Ukuvula noma ukuvala i ku isinqumo kothile njengoba isibani edeskini. Kodwa futhi ukhulume isikhundla eMhlabeni emkhathini, kwi-engeli we tigameko imisebe nezinye ubuhlakani, okungase neyaziwayo babe izingane zesikole akudingeki. Ukuze wenze lokhu, abazali engcono hlakanipha ukubonisa ngokucacile ukuthi lokhu kwenzeka kanjani. Ukuze siqonde ukuthi kungani ebusuku simnyama, kubalulekile ukuba yazi ingane nge imiqondo emibili: yini ilanga futhi yileyo planethi ewuMhlaba. Kwenze lilula: ukudweba amabhola amabili, eyodwa - yellow elinemisebe (empeleni elangeni), kanye nezinye - ne uhlobo uhlaka blue zaleli zwekazi. Ngaphezu kwalokho, ngaphandle kokuya amagama ayinkimbinkimbi ukukhuluma mayelana ifomu kanye nekukhombisa esebenzisa we-solar imodeli uhlelo. Engingakusho nje ibhola yellow futhi one encane, futhi uma kungenzeka, kungcono ukuthenga imodeli ngokugcwele noma bebodwa ukwenza okufanayo, kodwa namanje nengane. Ukuze abonise ukuthi ilanga sisesenjalo, futhi thina ugijime, okubangela imisebe yakhe etincenyeni letehlukene wonke kuyenzeka zingayitholi. Khona-ke umntwana aqonde ukuthi ubusuku amnyama, ngoba ngalesi sikhathi sifulathela ke, we shintsha ilanga, ngomqondo ongokomfanekiso, emuva. Ngokucaca ephelele, ungakwazi ngaso yilobo busuku ukuze ababonise lesi simanga usebenzisa wonke efanayo futhi flashlight, edlala indima ilanga.