Colloidal crystal — A colloidal crystal is an ordered array of colloid particles, analogous to a standard crystal whose repeating subunits are atoms or molecules.[1] A natural example of this phenomenon can be found in the gem opal, where spheres of silica assume a… … Wikipedia
Photonic crystal — The opal in this bracelet contains a natural periodic microstructure responsible for its iridescent color. It is essentially a natural photonic crystal, although it does not have a complete photonic band gap. Photonic crystals are periodic… … Wikipedia
Surface phonon — Phonons are collective lattice vibration modes, and surface phonons are those particular modes associated with surfaces; they are an artifact of periodicity, symmetry, and the termination of bulk crystal structure associated with the surface… … Wikipedia
Monochromator — in a x ray beamline at the Advanced Photon Source, Argonne National Laboratory. A monochromator is an optical device that transmits a mechanically selectable narrow band of wavelengths of light or other radiation chosen from a wider range of… … Wikipedia
Visual acuity — 20/15 and 20/15 vision redirect here. For other uses, see 2020 (disambiguation). Typical Snellen chart used for visual acuity testing. Visual acuity (VA) is acuteness or clearness of vision, which is dependent on the sharpness of the retinal… … Wikipedia
Optical microscope — Microscope Uses Small sample observation Notable experiments Discovery of cells Inventor Hans Lippershey Zacharias Jans … Wikipedia
Dragon Warrior — This article is about the NES video game Dragon Warrior. For the series, see Dragon Quest. For the similarly named role playing game, see Dragon Warriors. Dragon Warrior … Wikipedia
Pulp Fiction (film) — Infobox Film name = Pulp Fiction caption = Promotional artwork writer = Quentin Tarantino Roger Avary starring = John Travolta Samuel L. Jackson Uma Thurman Bruce Willis Harvey Keitel Tim Roth Amanda Plummer Maria de Medeiros Ving Rhames Eric… … Wikipedia
Pulp Fiction — This article is about the Quentin Tarantino film. For the film s soundtrack, see Pulp Fiction (soundtrack). For the fiction magazine genre, see Pulp magazine. For other uses, see Pulp Fiction (disambiguation). Pulp Fiction … Wikipedia
X-ray crystallography — can locate every atom in a zeolite, an aluminosilicate with many important applications, such as water purification. X ray crystallography is a method of determining the arrangement of atoms within a crystal, in which a beam of X rays strikes a… … Wikipedia
Gramophone record — A 12 inch (30 cm) 33⅓ rpm record (left), a 7 inch 45 rpm record (right), and a CD (above) A gramophone record, commonly known as a phonograph record (in American English), vinyl record (in reference to vinyl, the material most commonly used after … Wikipedia