Qhov twg zoo dua, optical microscope lossis electron microscope?
Nrog rau txoj kev loj hlob sai ntawm kev tshawb fawb thiab thev naus laus zis, daim ntawv thov kev cia siab ntawm electron microscopes hauv thaj chaw ntawm microscopy yog qhov dav heev, uas qhia nws qhov tshwj xeeb zoo ntawm optical microscopes. Txawm li cas los xij, vim muaj cov thev naus laus zis sib txawv thiab thaj chaw ntawm kev siv ntawm optical microscopes thiab electron microscopes, electron microscopes tsis tuaj yeem hloov kho qhov muag microscopes.
Nyob rau hauv cov nqe lus ntawm kev siv nyob rau hauv biology, qhov kev daws teeb meem ntawm optical microscopes yog deb inferior rau cov electron microscopes, vim hais tias qhov kev daws teeb meem ntawm optical microscopes yog txwv los ntawm lub diffraction txwv, yog li nws cov kev daws teeb meem yuav tsis muaj tsawg tshaj li ib nrab ntawm lub wavelength ntawm qhov teeb meem teeb. Qhov ntawd yog hais tias, yog siv 400nm teeb pom kev zoo, cov khoom pom tsis tuaj yeem me dua 200nm. Txawm li cas los xij, vim nws lub sijhawm tiag tiag thiab kev soj ntsuam muaj peev xwm ua tau zoo, nws txoj haujlwm hauv biology yog qhov tsis sib xws, thiab nws tsis tuaj yeem ua yam tsis muaj lub tshuab ntsuas qhov muag xws li fluorescence microscopy thiab confocal microscopy hauv thaj tsam ntawm biology. Vim yog siv cov kab hluav taws xob rau kev soj ntsuam cov duab, electron microscopes tau yooj yim ua tiav qib nanometer daws teeb meem, uas yog irreplaceable rau high-resolution imaging daim ntaub ntawv.
Nyob rau hauv cov nqe lus ntawm daim ntawv thov nyob rau hauv metallographic tsom xam, lub magnification ntawm electron microscopes deb tshaj ntawm optical microscopes. Qhov siab tshaj plaws magnification ntawm niaj hnub electron microscopes tau tshaj 3 lab lub sij hawm, thaum lub siab tshaj plaws magnification ntawm optical microscopes yog hais txog 2000 zaug. Yog li, electron microscopes tuaj yeem saib ncaj qha rau cov atoms ntawm qee cov hlau hnyav thiab cov txheej txheem atomic lattice hauv cov muaju.
