Dab tsi yog qee qhov tsis zoo ntawm optical microscopes?
Optical microscope (English Optical Microscope, abbreviated as OM) yog ib qho khoom siv kho qhov muag uas siv cov qauv kho qhov muag kom nthuav dav thiab duab cov khoom me me uas tsis tuaj yeem txawv ntawm tib neeg lub qhov muag, kom tib neeg tuaj yeem khaws cov ntaub ntawv zoo. Ordinary optical microscopes tsis tuaj yeem pom 1 nanometer.
Rau cov ntawv thov hauv biology, kev daws teeb meem ntawm lub tshuab ntsuas qhov muag pom tau deb qis dua li ntawm lub tshuab ntsuas hluav taws xob. Vim hais tias qhov kev daws teeb meem ntawm optical microscope yog txwv los ntawm qhov kev txwv qhov sib txawv, nws qhov kev daws teeb meem tsis tuaj yeem tsawg dua li ib nrab ntawm lub wavelength ntawm qhov teeb meem teeb. Hauv lwm lo lus, yog siv 400nm teeb meem teeb pom kev zoo, cov khoom soj ntsuam tsis tuaj yeem me dua 200nm. Txawm li cas los xij, vim tias nws tuaj yeem ua raws li lub sijhawm thiab kev soj ntsuam zoo, nws cov xwm txheej hauv biology tsis muaj qhov sib piv. Nws yog tsis yooj yim sua kom tawm optical microscopes xws li fluorescence microscopes thiab confocal microscopes nyob rau hauv lub teb ntawm biology. Txij li thaum electron microscopes siv cov kab hluav taws xob los luam theej duab thiab duab, lawv qhov kev daws teeb meem tuaj yeem yooj yim mus txog qib nanometer, uas tsis tuaj yeem hloov pauv rau cov ntawv thov kev daws teeb meem siab.
Dab tsi yog qhov siab tshaj plaws magnification ntawm optical microscope?
Los ntawm kev txhim kho qhov kev ua tau zoo ntawm lub lens, qhov zoo tib yam optical microscopes tuaj yeem ua tiav qhov kev nthuav dav li ntawm 1000-1500 zaug, tab sis nws yeej tsis tau tshaj 2000 zaug.
Qhov siab tshaj plaws ntawm lub tshuab ntsuas hluav taws xob yog ntau dua 3 lab lub sijhawm, thaum qhov siab tshaj plaws ntawm lub tshuab ntsuas qhov muag yog li 2,000 zaug. Yog li ntawd, cov atoms ntawm qee cov hlau hnyav thiab cov txheej txheem atomic lattice hauv cov siv lead ua zoo tuaj yeem pom ncaj qha los ntawm electron microscope.
Optical microscopes suav nrog tsis yog tsuas yog optical microscopes uas tuaj yeem ua kom pom ntau dua ib txhiab zaus, tab sis kuj tseem siv hluav taws xob microscopes uas tuaj yeem nthuav dav ntau pua txhiab zaus, ua rau peb muaj kev nkag siab zoo txog cov cai ntawm kev ua neej ntawm cov kab mob. Feem ntau ntawm cov kev sim uas tau teev tseg nyob rau hauv cov tsev kawm ntawv theem nrab biology syllabus yuav tsum ua kom tiav los ntawm lub tshuab tsom. Yog li ntawd, kev ua tau zoo ntawm lub tshuab tsom iav yog tus yuam sij rau kev ua cov kev soj ntsuam zoo.
