Inqaku lesibini ngokumalunga nombono onge-substance - yindlela e-epistemological eliqondwa ngayo eli gama lithi substance, iizinto elinokukwazi ukuzisingatha kwakunye nemfuneko yolwazi ngobunzululwazi, (uJohn Locke, David Hume). U-Immanuel Kant ukholelwa kwinto yokokuba umthetho naphantsi kwaluphi na utshintsho oluthi lwenzeke kwinto yesiganeko eso kwaye nenani lezinto elithi lizigcine kulo ngokwendalo ziyinto efanayo, zingahlonyelwa k""mava afanayo."" U-Georg Wilhelm Friedrich Hegel uyichaza i-substance njengesidima sotshintsho, ukuguquka kwezinto, njengolona ""tshintsho lukhulu xa kusiya kukhula umnqweno."" Ngokuka-Arthur Schopenhauer i-substance - i-matter ngokukaDavid Hume - imbali engeyiyo inyaniso, the izinto ezibekho ngaxesha nye.

Iqala kwi-2007, ukhuphiswano waba idlalwe nge sine njengesiqhelo kwi-u-stages, yokuqala ekubeni semifinals, kwaye yesibini ekubeni yokugqibela, idlalwe yi-semifinals winners. Unyaka ngamnye, omnye ezine ukuba bathathe inxaxheba states abaququzeleli yokhuphiswano.

Zinqabile ii-metals ezinexabiso eliphezulu, nezifana ne-golide, isilvere kwaye i-platinum kusoloko kusenziwa ngazo i-jewellery. Ii-metals kusoloko kusenziwa ngazo amatyathanga nezi-screws. I-Pots kuphekwa ngazo ingenziwa ngecopper, i-aluminium, i-steel okanye i-iron. I-lead inzima kakhulu kwaye ixinene kwaye isenokusetyenziswa njenge-ballast kwi-inqanawa ukuze inqande zingabhukuqi, okanye ikhusele abantu kwi-ionizing radiation.

Ukususela ngo-2013 iithoyilethi zomngxuma bezisetyenziswa ngabantu abaqikelelwa kwi-1.77 bhiliyoni. Oku ubukhulu becala kwenzeka kumazwe asakhasayo kwakunye nasemaphandleni nakwimimandla esentlango. Ngo-2011 abantu abamalunga ne- 2.5 bhiliyoni bebengenazo iithoyiethi ezifanelekileyo yaye abaybhiliyoni enye baye babhenela ekuzithumeni kwiindawo ezivulekileyo kufutshane nalapho bahlala khona. KumaZantsi Asia kunye neAfrika EkuMazantsi eSahara ngabona bangakwaziyo ukuba neethoyilethi. Kumazwe asakhasayo ixabiso lethoyilethi eqhelekileyo yomngxuma liphakathi kwe-25 ne-60 USD. Iindleko eziqhubekayo zokuyilondoloza ziphakathi kwe-1.5 ne-4 USD mntu ngamnye ngonyaka zinto ezo zingasoloko zithathelwa ngqalelo. Kwezinye iinxalenye zamaphandle aseIndiya iphulo le ""No Toilet, No Bride"" liye lasetyenziselwa ukukhuthaza iithoyilethi ngokukhuthaza amabhinqa ukuba angavumi ukutshata namadoda angenazo iithoyilethi.

Ilungu ngalinye linohlobo lwe-atom olunye kuphela. Inani lee-protons ezikwi-atom libizwa ngokuba yi-atomic number okanye yinombolo ye-atom, umzekelo, zonke ii-atoms ezinee-protons ezi-6 zezelungu lekhemikhali eliyi-carbon, kwaye zonke ii-atoms ezinee-protons ezingama-92 zona zezelungu ekuthiwa yi-uranium.

Yintoni esinokuyenza ngoku, ukunqanda ukuba oku kungenzeki kubantwana bethu? Basuse abantwana bakho kwiindawo apho izidlwengu zinokufumana amathuba, iindawo zabucala kunye nolawulo kubantwana bakho, iindawo apho zinokwenza ezifuna ukukwenza ngohuthanda, naphi na apho zifuna ukukwenza khona nangokuthanda kwazo.

Kwinyanga yeDwarha ngo2014, isakhiwo sesikhumbuzo seWikipedia satyhilwa phambi koluntu lonke luphela sityhilelwa ePoland kunikwa imbeko kusenziwa nombulelo kwabo bathe bafaka isandla kwiWikipedia.