ellipticity

Noun

Meaning

Deviation of an ellipse or a spheroid from the form of a circle or a sphere; especially, in reference to the figure of the earth, the difference between the equatorial and polar semidiameters, divided by the equatorial; thus, the ellipticity of the earth is /.

Synonyms

Hypernyms

Examples

the oblateness of the planet Source: Internet

Aside from the reversal of handedness, the ellipticity of polarization is also preserved (except in cases of reflection by a birefringent surface). Source: Internet

Ellipticals main The Hubble classification system rates elliptical galaxies on the basis of their ellipticity, ranging from E0, being nearly spherical, up to E7, which is highly elongated. Source: Internet

It is important to note that the ellipticity of a galaxy on the sky is only indirectly related to the true 3-dimensional shape (for example, a flattened, discus-shaped galaxy can appear almost round if viewed face-on or elliptical if viewed at an angle). Source: Internet

KSB calculate how a weighted ellipticity measure is related to the shear and use the same formalism to remove the effects of the PSF. Source: Internet

Light reflected by a metal at non-normal incidence will generally have its ellipticity changed as well. Source: Internet

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