Ib nyuag keeb kwm ntawm Ntoo Chisel
| Chisels yog ib qho ntawm thawj cov cuab yeej. Lawv tau raug siv (hauv lawv daim ntawv yooj yim tshaj plaws) txij li Pob Zeb Hnub nyoog txiv neej tau kawm los tsoo pob zeb rau hauv cov duab zoo nkauj nrog lub ntsej muag ntse. | ||
| Cov pob zeb xws li flint tau siv los ntawm tus txiv neej Neolithic thiab muaj ntau qhov kev tshawb nrhiav archaeological. Flint tau nyiam vim nws yog tuab, tawv, thiab flakes yooj yim, thiab thaum flaked tawm muab razor-ntse npoo. | |
 | Raws li tib neeg tau kawm kom smelt ore (extract hlau los ntawm pob zeb los ntawm cua sov), flint cov cuab yeej tau hloov los ntawm cov cuab yeej ua los ntawm tooj liab, thiab ces bronze (ib tug alloy ntawm tooj liab thiab tin). Cov cuab yeej Bronze tau yooj yim dua rau kev ua haujlwm nrog thiab tuaj yeem hloov kho thiab ua kom zoo dua qub. | |
 | Nws yog lub npe hu hais tias thaum ub Iyiv cov ntoo ntoo thiab masons siv bronze chisels nyob rau hauv kev tsim kho ntawm pyramids. | |
 | Nrog rau kev tsim cov cua kub kub thiab muaj peev xwm ua rau cov hlau ore, cov bronze chisels softer tau hloov los ntawm cov hlau. | |
 | Raws li thev naus laus zis tau dhau los hauv lub sijhawm niaj hnub no thiab tib neeg tau kawm los sib xyaw cov pa roj carbon thiab hlau los tsim cov hlau, cov hlau chisel tau hloov los ntawm cov qauv nyuaj dua. | |
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