Cov Lus Nug Sib Tham Piv Txwv: Piv txwv ntawm Yas Yas yog ib qho ntawm cov khoom siv dav tshaj plaws hauv lub neej txhua hnub. Nws yog siv rau hauv ntau yam kev siv, los ntawm kev ntim khoom noj mus rau cov khoom siv hauv tsheb. Hauv tsab xov xwm no, peb yuav tshuaj xyuas cov lus nug sib tham piv txwv txog ntau hom yas, lawv cov yam ntxwv, thiab lawv siv li cas hauv lub neej txhua hnub. Yas yog dab tsi? Yas… Nyeem ntxiv
Piv txwv cov lus nug txog kev sib tham txog yas: Tshawb nrhiav cov txiaj ntsig thiab kev cuam tshuam ntawm cov khoom siv nrov tshaj plaws Yas, yog ib qho ntawm cov khoom siv uas peb paub zoo tshaj plaws hauv peb lub neej txhua hnub, tau coj ntau yam txiaj ntsig, tab sis kuj tseem ua rau muaj ntau yam teeb meem ib puag ncig tseem ceeb. Hauv tsab xov xwm no, peb yuav kawm txog yas kom tob dua, nkag siab txog nws cov txiaj ntsig, tshuaj xyuas cov teeb meem ib puag ncig uas nws ntsib, thiab tshawb nrhiav lub tswv yim ntawm... Nyeem ntxiv
Piv txwv teeb meem tham txog Inverse Vectors. Ib qho vector yog ib yam khoom lej uas muaj qhov loj thiab kev coj. Hauv kev kawm txog vectors, peb feem ntau ntsib vectors nrog cov khoom tshwj xeeb. Ib qho ntawm cov tswv yim yooj yim hauv vectors yog inverse vector, lossis negative vector. Tsab xov xwm no yuav tham txog cov teeb meem piv txwv thiab kev sib tham txog inverse vectors. Nkag siab txog Inverse Vectors Vectors… Nyeem ntxiv
Cov Lus Nug Piv Txwv Txog Kev Sib Tham Txog Qhov Chaw Vector. Vectors yog lub tswv yim tseem ceeb hauv kev lej thiab physics uas sawv cev rau qhov ntau thiab tsawg nrog ob qho kev taw qhia thiab qhov loj. Hauv ntau yam kev siv, vectors feem ntau siv los piav qhia txog qhov chaw, qhov ceev, lub zog, thiab ntau lwm yam kev ntsuas. Ntawm ntau hom vectors, qhov chaw vectors ua lub luag haujlwm tseem ceeb hauv kev kos duab qhov chaw ntawm ib qho chaw hauv ib qho… Nyeem ntxiv
Cov Lus Nug Piv Txwv Sib Tham Txog Kev Sib Raug Zoo Ntawm Cov Qauv Thiab Cov Khoom Ntawm Cov Polymers Kev Taw Qhia Cov Polymers yog cov khoom tshwj xeeb uas muaj cov saw ntev, rov ua dua ntawm cov molecules hu ua monomers. Cov qauv polymer tuaj yeem sib txawv heev, thiab cov kev hloov pauv no cuam tshuam ncaj qha rau lawv cov khoom siv lub cev. Kev nkag siab txog cov qauv polymer cuam tshuam li cas rau lawv cov khoom yog qhov tseem ceeb hauv ntau yam kev siv thev naus laus zis thiab kev lag luam. Tsab xov xwm no… Nyeem ntxiv
Piv txwv teeb meem tham txog Unit Vector ntawm Vector Kev Taw Qhia Hauv kev lej thiab physics, vectors yog cov ntsiab lus tseem ceeb uas sawv cev rau qhov loj thiab kev coj ua. Vectors feem ntau siv los piav qhia txog ntau yam xwm txheej xws li qhov ceev, lub zog, thiab kev hloov chaw hauv ob lossis peb-seem. Ib lub tswv yim tseem ceeb ntsig txog vectors yog unit vector. Tsab xov xwm no yuav… Nyeem ntxiv
Cov Lus Nug Piv Txwv & Kev Sib Tham Txog Hom Polymers Ib qho polymer yog ib lub molecule loj uas muaj cov molecule me me hu ua monomers. Polymers siv rau ntau yam kev siv, los ntawm cov yas thiab roj hmab mus rau cov fibers hluavtaws thiab cov ntaub ntawv tsim kho. Kev nkag siab txog polymers yog qhov tseem ceeb hauv chemistry, cov ntaub ntawv tshawb fawb, thiab ntau yam kev lag luam. Tsab xov xwm no yuav tham txog qee qhov ntawm... Nyeem ntxiv
Piv txwv teeb meem tham txog Column Vectors thiab Row Vectors Hauv kev lej, tshwj xeeb tshaj yog linear algebra, vectors yog lub tswv yim tseem ceeb uas siv ntau zaus hauv ntau daim ntawv thov, los ntawm kev ua qauv physics mus rau kev suav. Column vectors thiab row vectors yog ob hom kev sawv cev vector, txhua tus muaj nws tus kheej cov yam ntxwv thiab kev siv. Tsab xov xwm no yuav tham txog cov teeb meem piv txwv… Nyeem ntxiv
Piv txwv ntawm Condensation Polymerization Cov lus nug thiab kev sib tham Condensation polymerization yog ib hom kev sib xyaw polymerization uas tsim cov polymers los ntawm kev txuas monomers los ntawm kev tshem tawm cov molecules me me, xws li dej, methanol, lossis HCl. Cov txheej txheem no ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom siv polymer ntau yam siv hauv lub neej txhua hnub. Hauv tsab xov xwm no, peb yuav tshawb nrhiav cov piv txwv ntawm cov lus nug thiab sib tham txog... Nyeem ntxiv
Cov Lus Nug Piv Txwv Txog Kev Ntxiv Polymerization: Polymerization yog cov txheej txheem uas monomers—cov molecule me me uas muaj cov qauv zoo sib xws—ua ke los ua cov molecule loj dua hu ua polymers. Muaj ob hom polymerization tseem ceeb: kev ntxiv polymerization thiab condensation polymerization. Tsab xov xwm no yuav tham txog ib qho ntawm cov hom no, kev ntxiv polymerization, nrog rau kev hais txog cov lus nug piv txwv thiab kev sib tham rau… Nyeem ntxiv