Indicatrix

indicatrix

[in′dik·ə‚triks]

(optics)

Indicatrix

in optics a vector diagram representing the dependence on direction of the characteristics of a light field (light intensity and polarization) or of the optical characteristics of the medium (indexes of refraction; reflectivity).

A particular case of the indicatrix is the scattering indicatrix, which represents the dependence of the intensity of the scattered light on the angle of scattering under the condition that the incident light is not polarized, and the optical indicatrix (in crystal optics). The optical indicatrix of an optically isotropic medium is a sphere. The indicatrix for crystals with trigonal, hexagonal, and tetragonal systems is an ellipsoid of revolution. The indicatrix for crystals with rhombic, monoclinic, and tri-clinic systems is a general ellipsoid.

The indicatrix is used when the analytical equations for the corresponding angular dependences are complex or unknown, and also for the systematization of experimental data.

References in periodicals archive ?

The recorded species of Foraminifera are as follows: Alveolina indicatrix HOTTINGER, 1960.

Alveolina indicatrix HOTTINGER,1960 is recorded from lower and middle part of Chorgali Formation, from Jhalar station section.

BIOSTRATIGRAPHY OF CHORGALI FORMATION, JHALAR AREA, KALA CHITTA RANGE, NORTHERN PAKISTAN

Tissot's indicatrix is based on a set of equally sized circles on curved surface of the globe.

The example of plane map of the world in an equirectangular projection with Tissot's indicatrix of distortion of radius of 500 km is presented in Figure 12.

On geometric properties of spherical conics and generalization of [pi] in navigation and mapping

Let the spherical indicatrix of the principal normal vector of the curve C be denoted by [C.

2] be the tangent vector of the spherical indicatrix of the principal normal vector of the curve C and let [[bar.

Some characterizations of Mannheim partner curves in the Minkowski 3-space [E.sup.3.sub.1]/Mannheimi partnerkoverate iseloomustus Minkowski 3-ruumis [E.sup.3.sub.1]

The indicatrix for an isometric crystal is a sphere (see Fig.

The refractometer

We observe that the mentioned indicatrix can be a helix, so, one can ask whether this tangent spherical image is a general helix or not.

This curve is called the trinormal spherical image or trinormal indicatrix of the curve [beta] in [E.

Tangent and trinormal spherical images of a time-like curve on the pseudohyperbolic space [H.sup.3.sub.0]/ Pseudohuperboolse ruumi [H.sup.3.sub.0] ajasarnase joone puutuja ja trinormaali sfaarilised kujutised

2) The following statement about dispersion is given: "Dispersion follows in the format r [greater than] v or r [less than] v in accordance with whether the indices are greater for red or violet light, but the notation may also refer to dispersion of the optic axis or orientation of the indicatrix.

Dana's New Mineralogy

This enables one to explain that the nonlinear effects in the polarizability are linked with a "nonspherical optical indicatrix surface on microstructures distribution of the crystalline phase" [3].

A generalization of the Clausius-Mosotti [1] expression for dense polymeric media, taken as similar to high density solution with nonspherical optical indicatrix representation [3] due to the effect of its environment polarization, is given by

Optical properties of extruded polyethylene thin films related to anisotropy and inhomogeneous microstructure

Full browser ?

CITE

Site: Follow: Share:

Open / Close