Granite, ib lub pob zeb igneous ntuj tsim los ntawm quartz, feldspar, thiab mica, tau ntev tau lees paub rau nws qhov zoo nkauj thiab ruaj khov. Txawm li cas los xij, nws qhov tseem ceeb nthuav dav tshaj qhov architecture thiab countertops; granite ua lub luag haujlwm tseem ceeb hauv kev ruaj khov ntawm cov kab ke optical. Kev nkag siab txog kev tshawb fawb tom qab granite qhov ruaj khov tuaj yeem ua rau pom tseeb ntawm nws cov ntawv thov hauv cov chaw muaj kev ntsuas siab xws li cov chaw kuaj mob thiab cov chaw tsim khoom.
Ib qho ntawm cov laj thawj tseem ceeb uas ua rau granite nyiam siv rau hauv cov tshuab kho qhov muag yog nws qhov kev ruaj khov zoo heev. Cov pob zeb no muaj cov khoom sib xyaw ua ke ua rau nws tswj tau qhov kev ua haujlwm zoo hauv qab ntau yam xwm txheej ib puag ncig. Qhov kev ruaj khov no txo qhov kev co thiab kev hloov pauv, uas yog cov yam tseem ceeb hauv kev ua haujlwm kho qhov muag. Hauv lub tshuab kho qhov muag, txawm tias qhov kev txav me me tuaj yeem ua rau tsis sib xws, uas tuaj yeem cuam tshuam rau qhov zoo ntawm daim duab. Granite lub peev xwm los nqus thiab tshem tawm kev co ua rau nws yog cov khoom siv zoo tagnrho rau kev teeb tsa cov khoom siv kho qhov muag xws li telescopes thiab microscopes.
Tsis tas li ntawd xwb, granite muaj cov coefficient qis ntawm thermal expansion. Cov khoom no yog qhov tseem ceeb hauv kev siv optical, vim tias qhov kub thiab txias hloov pauv tuaj yeem ua rau cov khoom nthuav dav lossis cog lus, uas tuaj yeem ua rau tsis sib haum. Granite cov coefficient qis heev ntawm thermal expansion ua kom ntseeg tau tias cov khoom siv optical tseem ruaj khov thiab sib phim meej txawm tias muaj qhov kub thiab txias hloov pauv. Qhov kev ruaj khov no yog qhov tseem ceeb tshwj xeeb hauv cov kab ke optical siab, qhov twg qhov tseeb yog qhov tseem ceeb tshaj plaws.
Tsis tas li ntawd xwb, granite lub zog tiv taus kev hnav ua rau nws ruaj khov hauv kev siv kho qhov muag. Tsis zoo li lwm yam khoom siv uas lwj zuj zus, granite tseem khaws nws cov khoom, ua kom muaj kev ua haujlwm ntev thiab ruaj khov. Qhov kev ruaj khov no txo qhov xav tau hloov pauv ntau zaus, ua rau granite yog qhov kev xaiv pheej yig rau lub hauv paus ntawm cov kab ke kho qhov muag.
Hauv kev xaus lus, qhov kev tshawb fawb tom qab granite lub zog ruaj khov hauv cov tshuab kho qhov muag yog nws qhov rigidity, qis thermal expansion, thiab durability. Cov yam ntxwv no ua rau granite yog cov khoom tseem ceeb hauv kev kho qhov muag, ua kom ntseeg tau tias cov tshuab ua haujlwm tau zoo thiab txhim khu kev qha. Thaum thev naus laus zis txuas ntxiv mus, granite yuav txuas ntxiv ua lub hauv paus tseem ceeb hauv kev txhim kho cov tshuab kho qhov muag ua tau zoo.
Lub sijhawm tshaj tawm: Lub Ib Hlis-08-2025