Core eMhlabeni. Umlando Omfushane Ezemfundo

Umbono lomuntu zomhlaba ngaphandle basungula emhlabeni kusukela maphakathi nawo wangekhulu le-14. Kamuva, Rene Dekart, sezibalo esikhulu, wasikisela ukuba iplanethi yethu kwakhiwa ngesigaxa mass, owawungumnyaka ofuze owokuqala, ilanga elikhanyayo, kodwa ke selehlile phansi. Kule ndaba, bafihliwe ekujuleni "core eMhlabeni." Nokho, hlola lokhu nokucabanga ngesikhathi kwakungenakwenzeka.

Kamuva, Newton wathola uhambo French lososayensi waqinisekisa ukuthi pole planethi kancane isicaba. Kule kusobala ukuthi Umhlaba Awuyona imbulunga bunjwa njalo. Buffon (semvelo French), igcizelela isitatimende wasikisela ukuthi lokhu kungase kube njalo uma yembathani iplanethi has a isakhiwo esibunjiweyo. Buffon e 1776 wasikisela ukuthi endulo kwakukhona Ukungqubuzana ilanga futhi abanye lezinkanyezi ezinomsila. Comet le "akhishwe ukukhanya isisindo ezithile izidakamizwa. Lokhu mass kancane kancane ukupholisa phansi, kwaba Earth.

hypothesis Buffon yaqala ukuhlola physics. Ngokwe imithetho thermodynamic, inqubo abakwazi kuqhubeke unomphela ukuthi esikhathini ukuthi uzobe ukhathele amandla ayo, kuzoyeka. Ekhulwini le-19, abanye izibalo enziwa. Sezibalo physics uLord Kelvin eNgilandi wathola ukuthi, ukuze kuphole, ulahlekelwe semali amandla, futhi ngiyeke phansi ukuba mass ezibunjiwe, waba ngendlela okwenzeka ngayo manje, udinga yikhulu kuphela ngemva kweminyaka eyisigidi. Izazi zesayensi yokwakheka komhlaba, esikhundleni salokho, waveza ukuthi engu-the emadwaleni okuningi. Ngaphezu kwalokho, ngekhulu le-19 liye wathola lo mkhuba radioactivity. Ngakho, kwaba sobala ukuthi wokugoqa izici ezidingekayo emakhulwini amaningi izigidi zeminyaka.

Kuze kube muva nje, kwakunenkolelo yokuthi umnyombo umhlaba ngokuphelele bushelelezi ukuma njalo ibhaluni (njenge inganono nucleus). Eighties, ke yasungulwa okuthiwa tomography zokuzamazama komhlaba. Ngalo, ososayensi bathole ukuthi i core eMhlabeni has sezwe lalo. I ukushuba ebusweni wazibonakalisa ezahlukene. Kwezinye izindawo, izingalo eziyikhulu namashumi amakhilomitha amahlanu, futhi ngakolunye - kuze kube amathathu namashumi amahlanu.

Ngokolwazi etholwe esebenzisa amagagasi okuzamazama komhlaba, uketshezi (esibunjiweyo) kuyinto core yangaphandle Zomhlaba (ungqimba kokuba ezimazombezombe). Engxenyeni engaphakathi okufanayo 'kunzima ", ngoba iplanethi ungaphansi kokucindezeleka. ingcindezi wengxenye elingaphandle ibalwa kwakuthiwa imayelana 1.3 million izikhathi eziphindwe. Maphakathi ingcindezi luyanda eziphindwe izigidi ezintathu. Okuphansi Umhlaba core mayelana 10,000 degrees. Isisindo imitha intilibathwa impahla kusukela amathumbu planethi - yishumi nambili noma nantathu amathani.

Phakathi amasayizi izingxenye, okubandakanya core emhlabeni, kukhona isilinganiso esithile. Ingxenye kwangaphakathi imayelana 1.7% mass zomhlaba. I yangaphandle okuyingxenye - abangamashumi amathathu amaphesenti. Indaba ukuthi yakha iningi ngokusobala buhlanjululwe okuthile kuqhathaniswa lula, cishe, grey. Abanye ochwepheshe basikisela ukuthi lokhu isici mayelana nane amaphesenti.