principal axis


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principal axis

n
1. (General Physics) the line passing through the optical centre and centres of curvature of the faces of a lens or a curved mirror
2. (General Physics) any of three mutually perpendicular axes about which the moment of inertia of a body is maximum
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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"
axis - a straight line through a body or figure that satisfies certain conditions
References in periodicals archive ?
The first principal axis showed that the nest tree height (NTH), nest height (NHE), diameter of the nest tree (DBH), distance to stream (DST) and average arbor height (AAH) were the higher loads, which mainly represented the vegetation factor and food factor.
Variables data-set identifies three principal axis that could be useful to discriminate the occurring event that actually happens during the corrosive phenomena: Time-Axis, Waveform-Axis, Event-Axis.
The principal axis of the SAXS pattern indicates the direction in which the polymer has been strained from the cold flow.
Torque 7 N*m at 2000 rpm Principal axis inner cone DIN 69871-B (ISO-30) Working area Head-to-Table max.
The researchers stated that the multilevel metamaterial linear polarizer rotates light with polarization perpendicular to its principal axis by 90deg.
The principal axis of the moon's overall shape (the long axis of the lemon) was now separated from the gravity principal axis by about 34 degrees.
The key study goals were as follows: (a) to examine the validity evidence based on the internal structure drawn from the scores on the SAI-SV using principal axis factoring (PAFs); (b) to examine the assumptions of univariate and multivariate normality or distribution of the SAI-SV items; (c) to examine the validity evidence based on the internal structure drawn from the scores on the SAI-SV using CFAs; (d) to estimate the internal consistency (Cronbach's alpha coefficients) of scores on the SAI-SV; and (e) to estimate 2-week test-retest reliability coefficients for SAI-SV scores.
In order to check the validity of the constructs and their possible independence, factorial analyses were performed, using the Principal Axis Factoring method and Oblimin rotation, with the items of each scale separately and later with the items of the two scales together.
Using the data from the two major PCs (Figure 1), the FS populations were dispersed into four quadrants where quadrant I included individuals from Ventanas, and it had high values of commercial height, basal area, commercial volume and total volume but low values of straight shape, bifurcation height, principal axis dominance and total height.
canonical coordinate system X', used principal axis in which the quadric is in standard form [1, Table 3.
We consider the principal axes of the outer clad to coincide with the optical axis along the z-direction, and the extraordinary principal axis attains a radial orientation.

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