Microscopy

LYC_4610 R005 40x quartz optic axis interference figure fourier transform conoscopic melatope isogyre bertrand lens petrographic thin section microscopy rock geology Singapore Bukit Gombak Little Guilin

microscopymicroscopetransmitted lightbrightfielddiascopic illuminationconoscopyconoscopicinterference figureisogyremelatopefourier transformbertrand lensback focal planeobjectiveuniaxialquartzcross polarized lightcrossed polarizersxplanisotropicanisotropybirefringencebirefringentinterference colouroptical mineralogypetrographic thin sectionpetrographypetrologygeologyrockmineral