Yuav Ua Li Cas Calibrate Polarizers rau Polarizing Microscopes
Hauv kev ua haujlwm tiag tiag, cov lus qhia kev vibration ntawm sab sauv thiab sab polarizers ntawm lub tshuab tsom iav polarizing yuav tsum yog orthogonal rau ib leeg, los yog cov lus qhia sab hnub tuaj-sab hnub poob thiab sab qaum teb-sab qab teb, uas muaj feem cuam tshuam nrog cov kab rov tav thiab ntsug ntawm lub eyepiece reticle. Qee lub sij hawm tsuas yog ib qho qis polarizer yog siv rau kev soj ntsuam, thiab kev co kev taw qhia ntawm cov polarizer qis yuav tsum tau txiav txim siab, yog li cov polarizer yuav tsum tau kho thaum lub sijhawm ua haujlwm.
(1) Kev kuaj pom ntawm lub qhov muag reticle
Feem ntau, nws yog ib qho tsim nyog los xyuas seb lub eyepiece reticle yog orthogonal thiab seb nws puas yog nyob rau hauv tib lub vibration kev taw qhia raws li lub sab sauv thiab sab polarizers. Nyob rau tib lub sijhawm, xaiv ib daim ntawm biotite uas tau muab tshem tawm tag, txav mus rau qhov chaw ntawm lub qhov muag ntawm qhov muag, thiab muab cov cleavage seam sib npaug rau ib qho ntawm cov reticle. sau cov nplai tus naj npawb ntawm theem, thiab tom qab ntawd tig rau theem kom lub cleavage seam yog sib npaug mus rau lwm yam ntoo khaub lig xaim, sau cov nplai tus lej ntawm theem, qhov sib txawv ntawm ob tus lej ntsuas yog 90 degree, qhia tias tus ntoo khaub lig xaim. yog orthogonal.
(2) Kev txiav txim siab thiab kho qhov kev vibration ntawm cov polarizer qis
Feem ntau, biotite yog siv los xyuas cov kev taw qhia kev vibration ntawm polarizer, vim biotite yog cov pob tshab pob tshab, uas yog cov yam ntxwv zoo nyob rau hauv ib lub teeb polarized. Ua ntej pom ib daim ntawm biotite uas yog cleaved thiab meej, txav mus rau hauv nruab nrab ntawm lub reticle ntawm lub qhov muag, thawb tawm sab sauv polarizer, tig rau theem rau ib lub voj voog, thiab saib xyuas cov xim hloov ntawm biotite, vim biotite muaj zog tshaj. absorption ntawm vibrational teeb nyob rau hauv lub cleavage kev taw qhia, Yog li ntawd, thaum cov xim ntawm biotite mus txog qhov tob tshaj plaws, cov kev taw qhia ntawm lub cleavage seam yog lub vibration kev taw qhia ntawm lub sab polarizer.
(3) Orthogonal kho ntawm sab sauv thiab sab polarizers
Tom qab cov kev taw qhia ntawm lub polarizer qis yog calibrated, tshem tawm daim ntawv, thawb lub polarizer sab sauv, thiab saib seb lub teb ntawm saib yog dub kiag li, uas yog, seb nws yog nyob rau hauv ib tug extinction state. Yog tias nws yog dub kiag li, nws txhais tau hais tias cov kev taw qhia kev co ntawm lub sab sauv thiab sab polarized teeb yog orthogonal rau ib leeg. Txwv tsis pub, sab sauv polarizer yuav tsum raug kho, uas yog, tig lub polarizer sab sauv kom ua rau thaj tsam ntawm qhov tsaus ntuj. Thaum tig, nres ntsia hlau ntawm lub polarizer sab sauv yuav tsum tau xoob ua ntej, thiab tom qab ntawd nruj nreem kaw tom qab calibration.
