Yuav ua li cas calibrate polarizer ntawm polarizing microscope
Hauv kev ua haujlwm, cov kev taw qhia kev vibration ntawm lub sab sauv thiab qis polarizing tsom iav ntawm polarizing microscope yuav tsum yog orthogonal rau ib leeg, los yog nyob rau sab hnub tuaj-sab hnub poob lossis sab qaum teb-sab qab teb, thiab txhua tus yuav tsum ua raws li cov lus qhia kab rov tav thiab ntsug ntawm lub crosshair ntawm eyepiece. Qee lub sij hawm 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 cov polarizer yuav tsum tau ntsuas thaum ua haujlwm.
1. Kev kuaj pom ntawm cov plaub hau hauv eyepiece
Tshawb xyuas seb lub ntsej muag ntawm lub ntsej muag puas yog orthogonal thiab seb nws puas ua raws li cov kev taw qhia kev vibration ntawm daim iav sab sauv thiab sab qis. Ib txhij xaiv ib daim ntawm biotite nrog kev ua tiav tiav heev, txav mus rau qhov chaw ntawm crosshair ntawm lub qhov muag, ua kom cov cleavage seam sib npaug mus rau ib qho ntawm cov hlaws dai, sau cov lej teev rau ntawm theem, thiab tom qab ntawd tig cov theem mus ua kom tiav. cleavage seam parallel mus rau lwm tus crosshair, sau tus lej ntsuas ntawm theem. Qhov sib txawv ntawm ob qhov ntsuas ntsuas yog 90 degree, qhia tias cov plaub hau yog orthogonal.
2. Kev txiav txim siab thiab kho qhov kev vibration ntawm daim iav polarizing
Yog vim li cas siv biotite los xyuas qhov kev vibration ntawm polarizer yog tias biotite yog cov pob tshab pob tshab uas muaj cov yam ntxwv zoo nyob rau hauv ib qho polarization. Ua ntej, nrhiav ib qho ntshiab thiab cleaved piece ntawm biotite, txav nws mus rau hauv nruab nrab ntawm lub crosshair ntawm lub eyepiece, thawb tawm lub sab sauv polarizer, tig lub theem ib zaug, thiab saib cov xim hloov ntawm biotite. Vim tias biotite absorbs lub teeb vibration nyob rau hauv qhov kev taw qhia cleavage * muaj zog, thaum cov xim biotite nce mus txog nws qhov tob tshaj plaws, cov kev taw qhia ntawm lub cleavage seam yog cov kev taw qhia kev co ntawm lub polarizer qis.
3. Kho ntawm orthogonal polarization ntawm sab sauv thiab qis polarizing iav
Tom qab ua raws 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 qhov chaw saib puas yog dub, uas yog, txawm tias nws yog nyob rau hauv lub xeev extinction. Yog hais tias nws yog tag nrho cov dub, nws qhia tau hais tias kev co kev taw qhia ntawm sab sauv thiab sab polarizations yog orthogonal rau ib leeg. Txwv tsis pub, lub sab sauv polarizer yuav tsum tau calibrated los ntawm rotating nws kom txog rau thaum lub teb ntawm saib yuav * tsaus. Thaum rotating, nres ntsia hlau ntawm lub polarizer sab sauv yuav tsum tau loosened ua ntej, calibrated kom raug, thiab ces nruj.
