population gratings

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• Electromagnetically induced grating — (EIG) is a physics phenomenon based on light interference (or, more generally, on electromagnetic fields) where an interference pattern is used to build a dynamic spatial diffraction grating in matter. Introduction Electromagnetically induced… …   Wikipedia

• Nova (laser) — View down Nova s laser bay between two banks of beamlines. The blue boxes contain the amplifiers and their flashtube pumps , the tubes between the banks of amplifiers are the spatial filters. Nova was a high power laser built at the Lawrence… …   Wikipedia

• Andalusia — For the more extensive Muslim era region, see Al Andalus. For other uses, see Andalusia (disambiguation). Andalusia Andalucía (Spanish)   Autonomous Community   …   Wikipedia

• HiPER — The High Power laser Energy Research facility (HiPER), is an experimental laser driven inertial confinement fusion (ICF) device undergoing preliminary design for possible construction in the European Union starting around 2010. HiPER is the first …   Wikipedia

• Istanbul — /is tahn boohl , tan ; is tahn bool , tan /; Turk. /is tahm bool/, n. a port in NW Turkey, on both sides of the Bosporus: built by Constantine I on the site of ancient Byzantium; capital of the Eastern Roman Empire and of the Ottoman Empire;… …   Universalium

• Quantum cascade laser — Quantum cascade lasers (QCLs) are semiconductor lasers that emit in the mid to far infrared portion of the electromagnetic spectrum and were first demonstrated by Jerome Faist, Federico Capasso, Deborah Sivco, Carlo Sirtori, Albert Hutchinson,… …   Wikipedia

• eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

• coloration — colorational, adj. colorationally, adv. /kul euh ray sheuhn/, n. appearance with regard to color arrangement or use of colors; coloring: the bold coloration of some birds. [1605 15; COLOR + ATION] * * * ▪ biology Introduction       in biology,… …   Universalium

• lepidopteran — /lep i dop teuhr euhn/, adj. 1. lepidopterous. n. 2. a lepidopterous insect. [1850 55; LEPIDOPTER(A) + AN] * * * Any of the more than 100,000 species constituting the order Lepidoptera (Greek: scaly wing ): butterflies, moths, and skippers. The… …   Universalium

• nebula — nebular, adj. /neb yeuh leuh/, n., pl. nebulae / lee , luy /, nebulas. 1. Astron. a. Also called diffuse nebula. a cloud of interstellar gas and dust. Cf. dark nebula, emission nebula, reflection nebula …   Universalium

• Raman spectroscopy — Energy level diagram showing the states involved in Raman signal. The line thickness is roughly proportional to the signal strength from the different transitions. Raman spectroscopy (   …   Wikipedia