Structure formation — refers to a fundamental problem in physical cosmology. The universe, as is now known from observations of the cosmic microwave background radiation, began in a hot, dense, nearly uniform state approximately 13.7 Gyr ago. [cite journal |author=D.… … Wikipedia
Transparent slate — Slate Slate (sl[=a]t), n. [OE. slat, sclat, OF. esclat a shiver, splinter, F. [ e]clat, fr. OF. esclater to shiver, to chip, F. [ e]clater, fr. OHG. sleizen to tear, slit, split, fr. sl[=i]zan to slit, G. schleissen. See {Slit}, v. t., and cf.… … The Collaborative International Dictionary of English
Stellar structure — Stars of different mass and age have varying internal structures. Stellar structure models describe the internal structure of a star in detail and make detailed predictions about the luminosity, the color and the future evolution of the… … Wikipedia
Lens — The transparent structure inside the eye that focuses light rays onto the retina (the nerve layer that lines the back of the eye, senses light and creates impulses that go through the optic nerve to the brain). The lens was named after the lentil … Medical dictionary
Hawker Typhoon — Typhoon Typhoon Ib EK139 N Dirty Dora of 175 Sqn. being armed with 500 lb (227 kg) concrete practice bombs in late 1943 … Wikipedia
Cornea — The clear front window of the eye. The cornea transmits and focuses light into the eye. The eye has a number of other components. These include the iris, pupil, lens, retina, macula, optic nerve and vitreous. The iris is the colored part of the… … Medical dictionary
Guided-mode resonance — or waveguide mode resonance is a phenomenon wherein the guided modes of an optical waveguide can be excited and simultaneously extracted by the introduction of a phase matching element such as a diffraction gratingor . Such guided modes are also… … Wikipedia
Eye — The organ of sight. The word eye come from the Teutonic auge. The eye has a number of components. These include the cornea, iris, pupil, lens, retina, macula, optic nerve and vitreous. The cornea is the clear front window of the eye that… … Medical dictionary
Gustave Eiffel — Infobox Architect caption= name= Alexandre Gustavo Eiffel nationality=French birth date=birth date|1832|12|15|mf=y birth place= Dijon, Côte d Or, France death date=death date and age|1923|12|27|1832|12|15|mf=y death place=Rue Rabelais in Paris… … Wikipedia
Guild — For other uses, see Guild (disambiguation). One of the legacies of the guilds, the elevated Windsor Guildhall was originally a meeting place for guilds, as well as magistrates seat and town hall. A guild (German: Gilde) is an association of… … Wikipedia
Partenavia P.68 — infobox Aircraft name = P.68 Victor type = Light transport manufacturer = Partenavia caption = Partenavia P.68 (D GHAN) at Cambridge Bay Airport, Nunavut, Canada designer = Luigi Pascale first flight = 1970 introduced = retired = status = primary … Wikipedia