Axis

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Related to optic axis: double refraction

Axis

In Cartesian charting, a line that bisects a chart. The x-axis cuts a chart horizontally, while the y-axis cuts it vertically.
References in periodicals archive ?
Large geometry means the lenses have a dimension to the perpendicular optic axis of at least 5 mm compared with previous values of 0.5 mm or less.
The chamber is sealed to make it water tight, and then a small point light source is used to locate the optic axis of the recorded ommatidium.