pit aperture
Look at other dictionaries:
Numerical aperture — The numerical aperture with respect to a point P depends on the half angle θ of the maximum cone of light that can enter or exit the lens. In optics, the numerical aperture (NA) of an optical system is a dimensionless number that characterizes… … Wikipedia
GLaDOS — GLaDOS, as she appears in Portal 2 Series Portal First game Portal (2007) Created by Erik Wolpaw Kim Swift … Wikipedia
Eye — For other uses, see Eye (disambiguation), Ocular (disambiguation), Ocular, and Oculus. For taxon specific articles, see human eye, simple eye in invertebrates, mollusc eye, and arthropod eye. Eye … Wikipedia
Evolution of the eye — The evolution of the eye has been a subject of significant study, as a distinctive example of a homologous organ present in a wide variety of taxa. The development of the eye is considered by some experts to be monophyletic; that is, all modern… … Wikipedia
hole — I (New American Roget s College Thesaurus) n. opening, aperture, gap, cavity; excavation, hollow; slot, puncture; dungeon; cave; space. See concavity, abode, interval. II (Roget s IV) n. 1. [A perforation] Syn. notch, puncture, slot, eyelet,… … English dictionary for students
Portal (video game) — Portal Portal s box art displays a figure moving into a portal. Signs of this style are commonly used in the game s environment. Developer(s) … Wikipedia
British hardened field defences of World War II — Hexagonal pillbox (type 22) British hardened field defences of World War II were small fortified structures constructed as a part of British anti invasion preparations. They were popularly known as pillboxes by reference to their shape.[1] Con … Wikipedia
Foramen — A natural opening. Although a foramen is usually through bone, it can be an opening through other types of tissue, as with the foramen ovale. * * * An aperture or perforation through a bone or a membranous structure. SYN: trema (1). [L. an… … Medical dictionary
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
Land of the Lost (1974 TV series) geography and technology — Land of the Lost was a 1974 1976 TV series presenting the adventures of the Marshall family (including Will and Holly and their father Rick, later replaced by their uncle Jack). The Marshalls become trapped in a pocket universe populated by… … Wikipedia
