white-light speckle

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• Optical heterodyne detection — is an important special case of heterodyne detection. In heterodyne detection, a signal of interest at some frequency is non linearly mixed with a reference local oscillator (LO) that is set at a close by frequency. The desired outcome is the… …   Wikipedia

• Optical interferometry — combines two or more light waves in an optical instrument in such a way that interference occurs between them. Early interferometers used white light sources and also monochromatic light from atomic sources (e.g., Young s double slit experiment… …   Wikipedia

• Holography — (from the Greek, ὅλος hólos whole + γραφή grafē writing, drawing) is a technique that allows the light scattered from an object to be recorded and later reconstructed so that it appears as if the object is in the same position relative to the… …   Wikipedia

• Coherence (physics) — In physics, coherence is a property of waves that enables stationary (i.e. temporally and spatially constant) interference. More generally, coherence describes all properties of the correlation between physical quantities of a wave. When… …   Wikipedia

• Fluid Science Laboratory — The Fluid Science Laboratory is a European (ESA s) science payload designed for use in Columbus built by Alenia Aeronautica Spazio and OHB System. It is a multi user facility for conducting fluid physics research in microgravity conditions. It… …   Wikipedia

• Digital image correlation — and Tracking (DIC/DDIT) is an optical method that employs tracking image registration techniques for accurate 2D and 3D measurements of changes in images. This is often used to measure deformation (engineering), displacement, and strain, but it… …   Wikipedia

• star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …   Universalium

• List of birds of Peru — This is a list of the bird species recorded in Peru. The avifauna of Peru includes a total of 1879 species, of which 139 are endemic, 3 have been introduced by humans, and 72 are rare or accidental. 91 species are globally threatened.This list s… …   Wikipedia

• Astronomical seeing — Schematic diagram illustrating how optical wavefronts from a distant star may be perturbed by a layer of turbulent mixing in the atmosphere. The vertical scale of the wavefronts plotted is highly exaggerated. Astronomical seeing refers to the… …   Wikipedia

• Wildlife of Uganda — The Wildlife of Uganda includes its flora and fauna and their natural habitats.Uganda has 364 species of mammals and 1062 species of birds.ConservationWCS began conservation work in Uganda through conducting biological surveys of savanna parks in …   Wikipedia

• List of African birds — This list of African birds is a listing of all the bird species known from the continent of Africa. TOCrightNotesThere are over 45 billion different species of birds in Africa.The taxonomy of this list adheres to James Clitorus Birds of the World …   Wikipedia