Za lingaliro la galasi
Galasi, ankatchedwanso Liuli ku China wakale.Zilembo zaku Japan zaku China zimayimiriridwa ndi galasi.Ndi chinthu cholimba chowoneka bwino chomwe chimapanga mawonekedwe opitilira maukonde akasungunuka.Pa kuzirala, mamasukidwe akayendedwe pang'onopang'ono amawonjezeka ndi kuumitsa popanda crystallization.Kapangidwe ka magalasi wamba Chemical oxide ndi Na2O•CaO•6SiO2, ndipo chigawo chachikulu ndi silicon dioxide.
Galasi ndi inert mankhwala m'malo tsiku ndi tsiku ndipo sagwirizana ndi zamoyo, kotero izo zimasinthasintha kwambiri.Galasi nthawi zambiri imakhala yosasungunuka mu asidi (kupatulapo: hydrofluoric acid imakumana ndi galasi kupanga SiF4, yomwe imatsogolera ku dzimbiri lagalasi), koma imasungunuka mu alkalis amphamvu, monga cesium hydroxide.Njira yopangira ndikusungunula zida zosiyanasiyana zokhala bwino ndikuziziritsa mwachangu.Molekyu iliyonse ilibe nthawi yokwanira kupanga kristalo kupanga galasi.Galasi ndi yolimba kutentha kutentha.Ndi chinthu chosalimba ndi kuuma kwa Mohs kwa 6.5.
Mbiri ya galasi
Galasi poyambilira anatengedwa kuchokera ku kulimba kwa miyala ya asidi yotulutsidwa ndi mapiri ophulika.Asanafike 3700 BC, Aigupto akale adatha kupanga zokongoletsera zamagalasi ndi magalasi osavuta.Pa nthawiyo kunali magalasi achikuda okha.Isanafike 1000 BC, China idapanga galasi lopanda utoto.
M'zaka za zana la 12 AD, magalasi ogulitsa malonda adawonekera ndikuyamba kukhala mafakitale.M'zaka za m'ma 1800, kuti akwaniritse zosowa za makina oonera zakuthambo, magalasi owoneka bwino anapangidwa.Mu 1873, Belgium idatsogolera kupanga magalasi athyathyathya.Mu 1906, dziko la United States linapanga makina opangira magalasi athyathyathya.Mu 1959, British Pilkington Glass Company inalengeza kudziko lonse kuti njira yoyandama yopangira magalasi athyathyathya idapangidwa bwino, komwe kunali kusintha koyambirira kopanga grooved.Kuyambira pamenepo, ndi mafakitale ndi kupanga kwakukulu kwa magalasi, galasi la ntchito zosiyanasiyana ndi katundu wosiyanasiyana watuluka mmodzi pambuyo pake.Masiku ano, galasi lakhala chimodzi mwazinthu zofunika kwambiri pamoyo watsiku ndi tsiku, kupanga, ndi sayansi ndi luso lamakono.
Nthawi yotumiza: Feb-21-2021