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principal axis
(redirected from Principal axes)

    Also found in: Encyclopedia, Wikipedia 0.01 sec.
principal axis
n
1. (Physics / General Physics) the line passing through the optical centre and centres of curvature of the faces of a lens or a curved mirror
2. (Physics / General Physics) any of three mutually perpendicular axes about which the moment of inertia of a body is maximum
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.principal axis - a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted; "in a normal eye the optic axis is the direction in which objects are seen most distinctly"
optic axis
axis - a straight line through a body or figure that satisfies certain conditions


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