How is the principal axis used in optical design software?

See also · Aircraft principal axes · One of the two principal axes of a hyperbola · Optical axis · The highest-order symmetry axis of a molecule, based on its ... Jan 10, 2020 ... The region properties are calculated with respect to the base sketch coordinate system, not the part or assembly coordinate system. 5 (The Principal Axis Theorem): Suppose A is an n × n symmet- ric matrix. Then there exists an orthogonal matrix P and a diagonal matrix. D such that PT AP ... Mar 19, 2025 ... ... axis lies along the length of the leaf. From the Cambridge English Corpus · principal axis. The principal normal is simply the principal axis ... Jun 19, 2024 ... The principal axes are approximately orthogonal to one another. 2 Related work. We discuss the application of pre-training, particularly in the ... noun · the line passing through the optical centre and centres of curvature of the faces of a lens or a curved mirror · any of three mutually perpendicular axes ... Principal axis theorem ... In geometry and linear algebra, a principal axis is a certain line in a Euclidean space associated with a ellipsoid or hyperboloid, ... the distribution, along with the variance along each principal axis. The principal axes and variances describe the orientation and size of the "error ... principal axis · noun · Browse Nearby Words · Cite this Entry · Share · More from Merriam-Webster · Popular in Grammar & Usage · Popular in Wordplay · Popular. Apr 1, 2015 ... A dissociative subtype has been recognized based on the presence of experiences of depersonalization and derealization in relation to DSM-IV posttraumatic ...