2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Los ntawm cov pov thawj archaeological thiab paleoarcheological, cov kws txawj xav tias nkawm khau tau tsim nyob ib puag ncig lub sijhawm nruab nrab Paleolithic kwv yees li 40,000 xyoo dhau los. Txawm li cas los xij, nws tsis yog txog thaum lub sijhawm Upper Paleolithic uas khau tau hnav tas li los ntawm cov neeg.
Thaum twg tib neeg pib siv khau?
Kev tshawb fawb tau ua raws li ob txhais ceg ntawm cov pob txha pob txha tau khawb los ntawm Tianyuan Qhov tsua ze ntawm Peking tau coj cov kws tshawb fawb los xaus tias tib neeg twb hnav khau 40,000 xyoo dhau los. Cov ntaub ntawv pov thawj nyob rau hauv cov pob txha-hnav khau tsim ib hom kev sib txawv ntawm lub cev tshaj qhov uas tshwm sim los ntawm kev mus rau taw.
Leej twg xub tsim khau?
Hauv Mesopotamia, kwv yees li 1600 txog 1200 BC, cov neeg roob uas nyob ntawm ciam teb Iran hnav ib hom khau mos ua los ntawm cov tawv qhwv uas zoo li moccasin. Egyptians pib ua khau los ntawm woven reeds thaum ntxov li 1550 BC.
Thaum twg nkawm khau tau laug thiab sab xis?
Nws tsis yog txog 1818, tias khau txoj cai tau tsim. Txog thaum ntawd, tsis muaj qhov sib txawv ntawm cov khau ua rau sab laug lossis sab xis. Thawj nkawm khau sab xis thiab sab laug tau ua hauv Philadelphia. Obviously, nkawm khau tsis tau tsim los rau kev nplij siab txog qhov no.
nkawm khau pib li cas?
Cov kws tshawb fawb kwv yees cov khau thawj zaug yog ua los ntawm cov tawv nqaij tsiaj thaum lub caij ntuj sov(5000,000 xyoo dhau los). Qhov loj tshaj nrhiav khaulos ntawm lub sijhawm no yog xav txog hnub rov qab mus rau 8000 BC thiab koom nrog cov Neeg Qhab Asmeskas hauv Missouri. Nkawm khau thaum ub rov qab mus rau 3300 BC tau pom nyob rau hauv Fabkis Alps.
Pom zoo:
Thaum twg cov khoom tawg tau siv thawj zaug?
Thawj thawj qhov hluav taws xob hluav taws xob tau tsim nyob rau hauv 1879 los ntawm Thomas Edison, thaum nws tau los nrog lub tswv yim ntawm kev tiv thaiv kab hluav taws xob siv rau teeb pom kev zoo los ntawm cov teeb meem tshwm sim ntawm overloads tam sim no thiab luv circuits.
Thaum twg cov lus tau siv thawj zaug?
Ntxiv mus, nws tuaj yeem nyuaj rau txheeb xyuas raws nraim thaum qee cov txheej txheem sau ntawv tau tsim thiab qhov twg los ua ntej. Qhov kev pom zoo dav dav yog tias Sumerian yog thawj hom lus, tsim nyob rau yav qab teb Mesopotamia ncig 3400 lossis 3500 BCE.
Thaum twg perchlorethylene tau siv thawj zaug?
Perchloroethylene (PCE, los yog tetrachloroethylene) tau siv txij li thaum the 1930s. Thawj lub tshuab ziab khaub ncaws qhib thaum twg? Cov qhab nia rau kev ua lag luam ua ntej lub tshuab ziab khaub ncaws mus rau lub tuam txhab ntawm Jolly-Belin, uas tau qhib hauv 1825 hauv Paris, raws li Phau Ntawv Qhia Txog Cov Ntsiab Lus.
Thaum twg snipers tau siv thawj zaug?
1701–1800. Cov ntaub ntawv thaum ntxov ntawm sniping lossis marksmanship tau siv thaum lub sij hawm American Revolutionary War. Piv txwv li, nyob rau hauv 1777 ntawm kev sib ntaus sib tua ntawm Saratoga cov Colonists nkaum hauv cov ntoo thiab siv cov phom sij thaum ntxov los tua cov tub ceev xwm Askiv.
Thaum twg tau siv hluav taws xob thawj zaug?
Ua ntej nws tau tsim nyob rau hauv the 1890s, lo lus taws tau siv los piav txog ib tus pas uas tuaj yeem teeb thiab siv los ua lub teeb. Thaum lub teeb nyem tau siv dav thoob plaws ntiaj teb, lawv tau pib paub hauv tebchaws Askiv li hluav taws xob.
