Dab tsi yog kev siv polarizing microscope
Polarizing microscope yog ib hom kev tsom xam siv los kawm cov ntaub ntawv pob tshab thiab opaque anisotropic. Nws muaj cov ntawv thov tseem ceeb hauv geology thiab lwm yam kev tshawb fawb thiab engineering majors. Txhua yam khoom uas muaj birefringence tuaj yeem pom meej meej nyob rau hauv lub tshuab ntsuas polarizing. Tau kawg, cov tshuaj no kuj tuaj yeem pom los ntawm staining, tab sis qee yam ntawm lawv tsis muaj, thiab yuav tsum siv lub tshuab ntsuas polarizing. Lub tshuab tsom iav polarizing yog ib qho cuab yeej tseem ceeb rau kev tshawb fawb thiab kev txheeb xyuas cov tshuaj birefringent los ntawm kev siv cov yam ntxwv ntawm lub teeb. Nws tuaj yeem siv rau kev soj ntsuam lub teeb pom kev zoo ib yam, kev soj ntsuam lub teeb orthogonal polarized, thiab kev soj ntsuam lub teeb conoscopic.
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Ib txoj hauv kev hloov lub teeb zoo tib yam rau hauv lub teeb polarized rau kev tshuaj ntsuam xyuas lub tshuab ntsuas kom paub seb cov khoom puas yog ib qho refraction (isotropy) lossis birefringence (anisotropy). Birefringence yog cov cuab yeej tseem ceeb ntawm cov muaju. Yog li ntawd, polarizing microscopes yog dav siv nyob rau hauv mineralogy, chemistry thiab lwm yam teb, raws li zoo raws li nyob rau hauv biology thiab botany.
Polarizing microscopy yog lub tshuab tsom rau kev txheeb xyuas cov khoom siv kho qhov muag ntawm cov qauv zoo ntawm cov teeb meem. Txhua yam khoom uas muaj birefringence tuaj yeem pom meej meej nyob rau hauv lub tshuab ntsuas polarizing. Tau kawg, cov tshuaj no kuj tuaj yeem pom los ntawm staining, tab sis qee qhov ntawm lawv tsis tuaj yeem ua tsis tau, thiab yuav tsum siv lub tshuab ntsuas polarizing.
Tus yam ntxwv ntawm polarizing microscope yog txoj kev hloov lub teeb zoo tib yam rau hauv lub teeb polarized rau kev tshuaj ntsuam xyuas lub tshuab ntsuas seb puas yog ib qho kev cuam tshuam (isotropy) lossis birefringence (anisotropy).
Birefringence yog ib qho tseem ceeb ntawm cov muaju. Yog li ntawd, polarizing microscopes yog dav siv nyob rau hauv teb xws li minerals, polymers, fibers, iav, semiconductors, thiab chemistry. Nyob rau hauv biology, ntau cov qauv kuj muaj birefringence, uas yuav tsum tau txawv los ntawm polarizing microscopy. Hauv botany, xws li kev txheeb xyuas cov fibers, chromosomes, spindle filaments, starch nplej, cell phab ntsa, thiab seb cov muaju muaj nyob rau hauv cytoplasm thiab cov ntaub so ntswg. Hauv cov nroj tsuag pathology, kev ntxeem tau ntawm cov kab mob feem ntau ua rau muaj kev hloov pauv hauv cov khoom siv tshuaj ntawm cov ntaub so ntswg, uas tuaj yeem txheeb xyuas los ntawm polarizing microscopy.
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Polarizing microscope yog ib qho cuab yeej tseem ceeb rau kev kawm cov khoom siv kho qhov muag ntawm cov muaju, thiab nws kuj yog lub hauv paus ntawm lwm txoj kev tshawb fawb siv lead ua (roj immersion method, Freund's method, etc.).
Polarizing microscope yog ib qho cuab yeej tseem ceeb rau kev tshawb fawb thiab kev txheeb xyuas cov tshuaj birefringent los ntawm kev siv cov yam ntxwv ntawm lub teeb. Nws tuaj yeem siv rau kev soj ntsuam lub teeb pom kev zoo ib yam, kev soj ntsuam lub teeb orthogonal polarized, thiab kev soj ntsuam lub teeb conoscopic. Ib txoj hauv kev hloov lub teeb zoo tib yam rau hauv lub teeb polarized rau kev kuaj xyuas lub tshuab ntsuas kom paub seb cov khoom puas yog ib qho refraction (isotropic) lossis birefringence (anisotropy).
Birefringence yog ib qho tseem ceeb ntawm cov muaju. Yog li ntawd, polarizing microscopes tau siv dav hauv cov ntxhia, tshuaj thiab lwm yam. Nyob rau hauv tib neeg thiab zoology, polarized lub teeb microscopy feem ntau yog siv los txheeb xyuas cov pob txha, cov hniav, cov roj cholesterol, cov hlab ntsha, cov qog hlwb, cov nqaij ntshiv, thiab cov plaub hau. Hnub no, kuv yuav qhia txog daim ntawv thov teb ntawm polarizing microscopes.
1. Biological teb:
Hauv cov kab mob muaj sia nyob, cov qauv fibrin sib txawv qhia tau hais tias anisotropy, thiab kev siv polarizing microscopy yields cov ntsiab lus ntawm cov txheej txheem molecular hauv cov fibers. Xws li collagen, spinning txhob lo lo ntxhuav thaum lub sij hawm faib cell, thiab lwm yam.
2. Kev txheeb xyuas ntawm ntau yam khoom siv roj ntsha thiab tsis muaj roj ntsha: xws li cov khoom siv hmoov txhuv nplej siab, kev txheeb xyuas cov tshuaj muaj pes tsawg leeg, fiber ntau, kua siv lead ua kua, DNA siv lead ua, thiab lwm yam.
3. Kev tshuaj xyuas kev kho mob: xws li pob zeb, uric acid crystal detection, mob caj dab, thiab lwm yam.
4. Geological thiab mineral tsom xam:
Ntxiv nrog rau kev siv tshuaj biomedical, polarizing microscopes kuj tuaj yeem siv rau kev tshawb pom lub teeb pom kev ntawm ntau yam minerals thiab crystals, thiab tau siv dav hauv roj av, mining thiab semiconductor industries. LED teeb pom kev zoo thiab cov ntxaij lim dej tshwj xeeb tuaj yeem siv rau hauv kev tswj kom zoo thiab kev tsom xam kev lag luam.
