Qhov no yog li cas koj calibrate lub polarizer ntawm ib tug polarization microscope.
Hauv kev ua haujlwm zoo, cov lus qhia kev vibration ntawm sab sauv thiab sab polarizers ntawm lub tshuab ntsuas polarizing yuav tsum yog orthogonal rau ib leeg, los yog nyob rau sab hnub tuaj-sab hnub poob thiab sab qaum teb-sab qab teb, ua raws li cov lus qhia transverse thiab longitudinal ntawm crosshair ntawm lub eyepiece. Qee zaum tsuas yog ib qho qis polarizer yog siv rau kev soj ntsuam, thiab kev co kev taw qhia ntawm lub polarizer qis yuav tsum tau txiav txim siab, yog li calibration ntawm lub polarizer yog tsim nyog thaum lub sij hawm ua hauj lwm.
(1) Kev txheeb xyuas cov plaub hau hla hauv qhov muag
Feem ntau, nws yog ib qho tsim nyog los xyuas seb cov plaub hau ntoo ntawm lub qhov muag puas yog orthogonal thiab seb lawv puas nyob rau hauv tib txoj kev raws li kev co ntawm lub sab sauv thiab sab polarizers. Nyob rau tib lub sijhawm, xaiv ib daim ntawm biotite cleaved kiag li thiab txav mus rau qhov chaw ntawm cov plaub hau ntoo ntawm lub qhov muag. Txav lub cleavage seam mus rau ib qho xov ntawm cov plaub hau hla thiab sau cov lej ntawm cov nplais ntawm qhov chaw thau khoom. Qhov sib txawv ntawm ob qhov ntsuas yog 90 degree, qhia tias cov plaub hau ntoo yog orthogonal.
(2) Kev txiav txim siab thiab kho qhov kev co kev taw qhia ntawm daim iav polarizing qis
Dub mica feem ntau yog siv los xyuas cov kev taw qhia ntawm polarization daim iav kev co, raws li nws yog ib tug dav faib pob tshab pob zeb nrog cov yam ntxwv tshwj xeeb nyob rau hauv ib tug polarized lub teeb. Ua ntej, nrhiav ib daim ntawm cov ntshiab thiab cleavage oriented biotite, txav mus rau qhov chaw ntawm crosshair ntawm lub eyepiece, thawb tawm lub sab sauv polarizing daim iav, tig lub theem ib zaug, thiab saib cov xim hloov ntawm biotite. Vim tias biotite muaj zog nqus ntawm kev co lub teeb nyob rau hauv qhov kev taw qhia cleavage, thaum cov xim ntawm biotite mus txog nws qhov tob tshaj plaws, cov kev taw qhia ntawm lub cleavage seam yog cov kev taw qhia kev co ntawm lub sab polarizing daim iav.
(3) Kho ntawm orthogonality ntawm sab sauv thiab sab polarizers
Tom qab kho cov kev taw qhia ntawm downward polarization, tshem tawm cov zaj duab xis nyias thiab thawb nws mus rau sab sauv polarizer saib seb lub teb ntawm kev pom yog dub kiag li, uas yog, txawm tias nws yog nyob rau hauv lub xeev extinction. Yog tias nws yog tag nrho cov xim dub, nws qhia tau hais tias cov kev taw qhia kev co ntawm sab sauv thiab sab polarizations yog orthogonal rau ib leeg. Txwv tsis pub, lub sab sauv polarizer yuav tsum tau kho los ntawm kev tig nws kom txog rau thaum lub teb ntawm saib mus txog nws qhov tsaus ntuj. Thaum rotating, nws yog ib qhov tsim nyog yuav tsum xub loosen lub nres ntsia hlau ntawm lub polarizer, dlhos nws, thiab ces zawm nws.
