Maneuver Do’s and Don’ts for Petrographic Microscopy

Petrographic microscopy requires a whole lot of intent looks, cautious stares, and yes, even more intent looks, and thus led to physical strains to the observer’s eye. Considering that even the topmost magnification feat could not be considered good enough to enlarge specks of minerals and crystals less than 0.010 millimeters in diameter, microscopists cannot help but succumb to the optical ‘wear and tear’ scenario of coping up with occupational demands. According to studies conducted by microscopy experts, however, most of these alleged whines and clamors regarding tired and teary eyes may perhaps be attributed to incorrect adjustments and modifications to some of the diagnostic parts and functions of a petrographic microscope. It is such a big irony then when people, who engage themselves in long-standing microscopic activities, despite how recent and advance his microscopes’ model may be, still continue to encounter many a number of eye-related harms and problems. Eccentric stage and object focusing, improper eyepiece width and erroneous mode of obtaining optic figures are just some of the key flaws and/or factors that, if properly considered and avoided, might have led to a less strenuous petrographic study. With the exception, of course, of laboratory personnel who possessed eyes that have no parallel lines of sight, only the awkward and ill-advised way of one-eyed focusing can do the alternative remedy for solving this microscopic hindrance. Since, ‘good’ and ‘better’ then are not the only options for carrying out an efficient petrographic microscopy, specialists settle for nothing but the ‘best,’ and hereby established set of guidelines to properly adjust and maneuver a microscope.

When it comes to determining how wide apart the eyepieces should be, it is said that adjusting them with both hands to gently push or pull the base plate will do the necessary width modification. Gentle rotation of the ocular bases of the petrographic microscope by moving them farther apart or closer together can also bring along the same remedial mechanism. Using the adjustment ring on the right ocular lens, proper set up for the right eye can be obtained by focusing the cross hairs to a desired magnitude preference. To further augment such part of the eye, microscopy veterans suggest that focusing knobs can be manipulated by raising and lowering the stage. Such will also come up with a good and descent view of the focused object as far as right visual symmetry is concerned. Bringing balance and completion then, the left eye as well is given due ease and focus using the adjustment ring on the left ocular lens. Meanwhile, centering the optics proved to be of dire importance, not only in handling a petrographic microscopy but more so on the even more complex polarizing microscopic counterpart as many indicative optical properties of minerals can be measured with its usage. In order to coincide with the rotational symmetry axis of the objectives, experts believed that stage rotation axis must be carried out; and though it is easy to center the optics in conceptual terms, the actual set up is significantly different, as it requires constant practice and a strictly steady hand and stroke of luck and constancy.