Thaum tib neeg pib ua yooj yim tsom iav ncig 600B.C., lawv siv polished obsidian raws li ib tug txawj ntse ntws.Thaum kawg, lawv pib tsim ntau cov iav tsom iav ntawm tooj liab, bronze, nyiaj, kub thiab txawm hlau.However, vim yog lub nyhav ntawm cov khoom, cov tsom iav tau me me los ntawm peb cov qauv: lawv tsis tshua ntsuas tau ntau tshaj li 78 ntiv (20 centimeters) inch thiab siv feem ntau rau kev kho kom zoo nkauj.La qhov tshwj xeeb yog pharos, lub lighthouse ntawm Alexandria, uas muaj cov hlau loj loj reflected tshav ntuj thaum nruab hnub thiab qhov hluav taws kub siv los cim lub lighthouse thaum hmo ntuj.
Kawm tsom iav tsis tuaj rau hauv qab txog thaum nruab nrab hnub nyoog nruab nrab, thiab txawm tias lawv tus txiv neej-tsim tau yooj yim thiab kim heev.Qhov ntawm cov teeb meem cuam tshuam yog qhov tseeb tias cov xuab zeb siv rau iav ua nyob hauv ntau cov impurities yuav tsim tseeb clarity.Nyob rau hauv Tsis tas li ntawd, qhov kev poob siab ua rau lub cua sov ntawm ntxiv molten hlau rau thaub qab yuav luag txhua zaus tsom iav.
Nws tsis yog txog thaum Renaissance, thaum lub Florentines tau tsim ib txoj kev rau kev ua kom tsis muaj kev kub siab rau, thaub niaj hnub ua lawv cov debut.These tsom iav thaum kawg meej txaus txaus rau arti -sts siv.Piv txwv li, tus kws kos duab Filippo Brunelleschi tsim linear perspective nrog rau daim iav muab lub illusion ntawm qhov tob ntawm daim teb. Ntxiv mus, tsom iav pib dhia tawm tshiab ntawm kos duab: tus kheej-portrait. Tom qab ntawd, Venetians yuav tsum yog tus iav-ua lag luam nrog lawv cov txuj ci iav ua ke.Qhov secrets yog li precious thiab cov lag luam li lucrative uas renegade craftsmen leej twg sim muag lawv cov paub rau txawv teb chaws kev cob qhia tau feem ntau assassinated.
Ntawm qhov no, cov tsom iav tau tseem pheej yig rau cov neeg nplua nuj, tab sis cov kws tshawb fawb tau pom tias muaj lwm yam - thiab siv rau lawv lub sijhawm ua ke. Thaum ntxov li 1660, cov lej tau sau tseg tias cov tsom iav yuav siv tau cov tsom iav los siv cov xov tooj leb; James Bradley siv txoj kev paub no los tsim thawj lub koob thaij hauv 1721. Txawm hais tias qhov tseem ceeb ntawm qhov kev tshawb nrhiav no, qhov tseeb tseem tshuav tias ob qho tib si kuj tsis muaj nqi.
Daim iav niaj hnub yog los ntawm silvering, los yog txau ib txheej tin txheej ntawm cov nyiaj los yog txhuas mus rau sab nraum qab ntawm daim ntawv iav.Justus Von Leibig tau tsim lub iav.Justus Von Leibig tau tsim cov txheej txheem rau xyoo 1835, tiam sis feem ntau tsom iav ua hnub no los ntawm cua sov aluminium nyob hauv lub tshuab nqus tsev, uas ces daim ntawv cog lus rau lub khob txau tsau.Mirrors yog tam sim no siv rau txhua yam ntawm lub hom phiaj, ntawm LCD projection mus lasers thiab tsheb headlights.Tab sis cov iav ua hauj lwm li cas? Xyuas hauv nplooj ntawv tom ntej.
