Dab tsi yog qhov dav dav ntawm lub tshuab electron microscope
Kev nthuav dav ntawm lub tshuab tsom iav yog hais txog cov khoom ntawm qhov loj ntawm lub qhov muag thiab lub hom phiaj lens, uas ua kom pom qhov ntev lossis qhov dav ntawm lub hom phiaj duab. Piv txwv li, yog tias qhov loj ntawm lub qhov muag yog 10 npaug, qhov loj ntawm lub hom phiaj lens yog 40 npaug, thiab qhov loj ntawm lub tshuab tsom iav yog 10 npaug × 40 ¥ 400 npaug.
Muaj ob lub ntsiab lus ntawm kev nthuav dav tag nrho, ib qho yog optical magnification, thiab lwm yam yog digital magnification (uas tsuas yog koom nrog thaum txuas cov khoom siv duab).
1. Optical magnification yog hais txog qhov magnification uas peb saib ib yam khoom nyob rau hauv lub qhov muag ntawm lub tshuab tsom. Cov txheej txheem suav rau kev nthuav dav qhov muag pom tau yooj yim, uas yog lub hom phiaj lens magnification * eyepiece magnification.
Piv txwv li, thaum xam qhov magnification ntawm lub stereoscopic microscope, lub hom phiaj ntawm ib tug tsis tu ncua kuj tsis paub meej magnification stereoscopic microscope feem ntau yog 0.7-4.5 zaug. Txawm li cas los xij, nrog rau 10x eyepiece, tag nrho qhov loj ntawm lub tshuab ntsuas no yog 7-45 zaug.
Kev suav cov tshuab kuaj kab mob lom neeg thiab cov kab mob metallographic yog yooj yim dua. Feem ntau, lub hom phiaj configuration yog 4x, 10x, 40x, 100x, thaum cov pa configuration ntawm lub eyepiece yog 10x. Tsis tas li ntawd, muaj 16x, 20x, thiab lwm yam. Tag nrho cov magnification tuaj yeem tau txais los ntawm kev sib npaug ntawm qhov loj ntawm lub qhov muag thiab lub hom phiaj sib cais.
2 digital magnification
Digital amplification yog hais txog qhov loj ntawm cov duab tso tawm ntawm ib qho khoom siv sab nraud. Tam sim no, nyob rau hauv kev ua lag luam, peb lub qhov muag microscope feem ntau yog siv los txuas CCD cov cuab yeej rau lub computer, saib, lossis TV rau kev soj ntsuam xyuas, txhawm rau txo qhov muag nkees thiab pab sib koom nrog lwm tus.
