Polarization kho txoj kev rau polarizing microscope
Hauv kev ua haujlwm, cov lus qhia kev vibration ntawm sab sauv thiab sab polarizers ntawm polarizing microscope yuav tsum yog orthogonal rau ib leeg, los yog nyob rau sab hnub tuaj-sab hnub poob thiab sab qaum teb-sab qab teb, txhua qhov sib xws nrog cov lus qhia transverse thiab longitudinal ntawm tus ntoo khaub lig plaub hau. tsom iav. 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 tshuaj 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 ua raws li kev co kev taw qhia ntawm sab sauv thiab sab polarizers. Nyob rau tib lub sij hawm, xaiv ib daim ntawm cov mica dub nrog ua tiav cleavage thiab txav mus rau qhov chaw ntawm tus ntoo khaub lig plaub hau ntawm eyepiece. Muab cov cleavage seam mus rau ib qho strand ntawm tus ntoo khaub lig cov plaub hau, sau tus naj npawb ntawm cov nplais ntawm lub sijhawm thauj khoom, thiab tom qab ntawd tig cov tsiaj theem kom cov cleavage seam sib npaug mus rau lwm cov plaub hau ntoo. Sau tus naj npawb ntawm cov nplai ntawm qhov chaw thau khoom, thiab qhov sib txawv ntawm ob qhov kev txiav yog 90 degree, qhia tias cov plaub hau ntoo yog orthogonal.
(2) Kev txiav txim siab thiab kho qhov kev vibration kev taw qhia ntawm Lower Polarization Daim iav
Feem ntau, dub mica yog siv los xyuas cov kev taw qhia kev co ntawm lub polarizer, vim hais tias dub mica yog cov pob tshab pob tshab uas muaj cov yam ntxwv nyob rau hauv lub teeb unipolar. Ua ntej, nrhiav ib daim ntawm cleavage thiab ntshiab biotite, txav mus rau hauv nruab nrab ntawm lub eyepiece hla cov plaub hau, thawb tawm lub sab sauv polarizer, tig lub theem rau ib lub voj voog, thiab saib cov xim hloov ntawm biotite. Vim hais tias biotite absorbs lub zog vibration lub teeb nyob rau hauv lub cleavage kev taw qhia, thaum cov xim ntawm biotite nce mus txog * qhov tob, cov kev taw qhia ntawm lub cleavage seam yog lub vibration kev taw qhia ntawm lub sab polarizer.
(3) Kho ntawm orthogonality ntawm sab sauv thiab sab polarizers
Tom qab kho cov kev taw qhia ntawm lub polarizer qis, 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, piv txwv li seb nws puas 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 lub sab sauv thiab sab polarized lub teeb yog orthogonal rau ib leeg. Txwv tsis pub, lub sab sauv polarizer yuav tsum raug kho los ntawm kev tig nws mus txog rau thaum qhov kev pom mus txog nws qhov tsaus ntuj tshaj plaws. Thaum rotating, nres ntsia hlau ntawm lub polarizer sab sauv yuav tsum tau loosened ua ntej, calibrated, thiab ces nruj.
