Is there a well-defined principal axis for diffractive optical elements like Fresnel lenses or diffraction gratings?

Sep 21, 2020 ... Zhang (2018) showed that an unequal-leg angle bent around its major principal axis generates displacements along its two axes and torsion with ... A formula is derived for determining the orientation of the arc linking on an auxiliary sphere the axis of inertia and the principal axis of inertia of the ... Principal axes for both the hour-averaged and low-passed currents were ... ellipticity = 1 - (minor axis / major axis) where. UV = Sum(u*v) - n U V. UU ... the characteristic way people relate to others in the context of intimate relationships, which is heavily influenced by self-worth and interpersonal trust. Effects of under- and overextraction on principal axis factor analysis with varimax rotation. · Citation. Wood, J. M., Tataryn, D. J., & Gorsuch, R. L. (1996). Jun 7, 2021 ... Using the case of an exploratory factor analysis procedure—principal axis factoring (PAF) and promax rotation—we show that this assumption is ... Apr 21, 2025 ... I want to calculate the principle axis of the second monument of area of polygons and was wondering if there were any existing ... A principal axis of rotation (or principal direction) is an eigenvector of the mass moment of inertia tensor (introduced in the previous section) defined ... Asteroid (5247) Krylov is spinning in a short axis mode characterized by rotation and precession periods of 368.7 and 67.27 h, respectively. Jan 2, 2010 ... ULS is the same as the MINRES method described in Harman's factor analysis book. The equivalence is pointed out e.g. by Joreskog (2007) in the ...