Hais txog tooj liab
Los ntawm hluav taws xob thiab thermal conductivity rau nws cov khoom siv tshuaj tua kab mob, tooj liab yog cov hlau uas muaj ntau yam uas muaj keeb kwm ntev ua rau lub ntiaj teb ua haujlwm zoo dua.
QHOV TSEEB
Txawm hais tias muaj ntau lub hom phiaj rau tooj liab cov khoom hauv lub neej niaj hnub, ntawm no yog qee qhov tseem ceeb tshaj plaws txog tooj liab:
Tooj liab yog cov khoom siv tshuaj nrog lub cim Cu. Atomic Number: 29. Atomic Nyhav: 63.546 AMU (atomic mass unit).
Copper los ntawm Latin lo lus cuprum, lub ntsiab lus "los ntawm cov kob ntawm Cyprus."
Tooj liab yog txiv neej cov hlau qub tshaj plaws, yos rov qab ntau dua 10, 000 xyoo. Lub pendant tooj liab pom nyob rau hauv dab tsi tam sim no sab qaum teb Iraq tau hnub tim txog 8,700 BC
Cov neeg Iyiv tau siv tooj liab ntau heev uas lawv siv lub cim ankh los qhia txog tooj liab hauv lawv cov kab ke ntawm hieroglyphs. tooj liab kuj sawv cev txoj sia nyob mus ib txhis hauv lawv cov kab lis kev cai.
Lub cev muaj zog ntawm tooj liab yog ib qho ntawm nws cov yam ntxwv tshwj xeeb tshaj plaws. Lwm yam tshaj li kub, tooj liab yog tib yam hlau uas muaj xim ntuj. Lwm cov hlau yog grey lossis dawb.
Cov tooj liab tuaj yeem rov ua dua yam tsis muaj kev poob hauv cov khoom, ua rau nws yog qhov kev xaiv zoo hauv lub sijhawm ntawm kev ruaj ntseg thoob ntiaj teb.
Ntau tshaj 400 tooj liab alloys tau siv niaj hnub no. Brass yog ib qho alloy ntawm tooj liab thiab zinc, thaum bronze yog ib qho alloy ntawm tooj liab, tin, aluminium, silicon thiab beryllium.
Tooj liab yog qhov tseem ceeb rau kev noj qab haus huv ntawm tib neeg, tsiaj txhu thiab nroj tsuag thiab yog ib feem tseem ceeb ntawm tib neeg kev noj haus. Cov khoom noj uas muaj tooj liab muaj xws li taum qhuav, almonds, broccoli, qhob noom xim kasfes, qej, taum pauv, taum pauv, cov khoom lag luam nplej thiab cov nqaij nruab deg.
Tooj liab maximizes kev ua tau zoo ntawm cov khoom uas muaj nws, pab txuag lub zog, CO2, nyiaj thiab lub neej.
Tooj liab yog qhov tseem ceeb, muaj txiaj ntsig zoo rau tib neeg thiab tau txhim kho peb lub neej zoo rau ntau pua xyoo.
