Differential refraction

(Astron.) the change of the apparent place of one object relative to a second object near it, due to refraction; also, the correction required to be made to the observed relative places of the two bodies.

See also: Refraction

References in periodicals archive ?
25 dg); optical distortions and differential refraction in so small field also are very small.
Such determination of F incorporates also part of differential refraction and distortion effects and changes in focus distance caused by focusing.
Iridescence - a lustrous rainbow-like play of colour caused by differential refraction of light waves - has just been detected in the fur of golden moles.
Chromatic Aberrations--caused by differential refraction of different wavelengths of light
The algorithm of determination of local differential refraction parameters in short results from the following double difference carrier phase measurements on L1 and L2 that can be expressed as:
1997, Numerical estimation of differential refraction correction in GPS measurements, Reports on Geodesy, No.
Liquid chromatography was conducted on a Waters high performance liquid chromatograph apparatus with a differential refraction index model 410 and a diodes array UV model 996 connected in series equipped with Ultrahydrogel columns.
Their low refraction index made detection by the differential refraction index impossible, but the elution of the two first components was identified from the UV absorption spectra.
However, differential refraction disperses light into a spectrum that is aligned perpendicular to the observer's horizon, and that axis only rarely coincides with the reported orientation of the color difference in ring A.
As the very last sliver of the Sun's upper limb sinks into the distant horizon, differential refraction in the Earth's atmosphere can cause it to turn bright green.
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