A uniaxial indefinite medium with its optic axis
along tangential orientation can be described by a dielectric tensor in a polar coordinate:
Meller Optics otters sapphire and single crystal quartz cell windows for Beckman and other centrifuges that are scribed with the optic axis
projection to simplify alignment.
Meller Centrifuge Cell Windows measure 19.03 millimeters in diameter, [+ or -] 0.03 mm by 0.5 mm thick [+ or -] 0.10 mm and are scribed on their edges with the projection of the optic axis
to assist with proper alignment.
More than 15 types of S60 sensors are available, each equipped with a standard M12 connector that can be rotated in a 90[degrees] are so the sensor can be mounted in straight and right angle positions relative to its optic axis
. In cable-out versions, the cable emerges at 45[degrees], which means that the cable can extend in virtually any direction.
With the high magnification of a stereomicroscope, we identified the ommatidium whose optic axis
was aligned with that of the microscope.