CRITICAL
ANALYSIS

	Ballscrews vs. Leadscrews Ballscrews may have a higher accuracy when it comes to length, but leadscrews have a higher accuracy per revolution when it comes to absolute position. Benefits As with any purchase, one must weight the cost against the benefits. By fully taking advantage of what this revolutionary technology has to offer, one can expect improvements in productivity and employee health and welfare, as well as reductions in capital expenditure. Depth of Field Analysis Determining which microscope is right for a particular application means taking into account the depth-of-field, or the depth-of-focus, that a particular tool can provide. Koehler's Illumination Design Improper adjusting of the field and aperture diaphragms can produce visual artifacts in the microscope image. These 'illusions' can be mistaken for abnormal features or defects. By optimizing the diaphragms for each magnification, depth-of-field and image clarity are also optimized. Microscope Ergonomics Since the invention of the microscope, the dangers inherent with using the tool for extensive periods of time have been obvious. In the 1800's people were already looking for ways to reduce the pain caused by using the microscope. Today, we are still faced with the same problems, and without redefining the operator interface, there are no solutions in sight. Resolvable Detail When dealing with video microscopy, several things must be taken into consideration, such as, CCD periodicity, video monitor pixel resolution, and microscope optical component specs.