extinction meter — /əkˈstɪŋkʃən mitə/ (say uhk stingkshuhn meetuh) noun (in photography) an exposure meter in which the reading is made by attenuating the light from the object until the point when the image on a ground glass screen becomes indistinguishable …
Light meter — A light meter is a device used to measure the amount of light. In photography, a light meter is often used to determine the proper exposure for a photograph. Typically a light meter will include a computer, either digital or analogue, which… … Wikipedia
Voigtländer Brillant — Infobox camera camera name = Voigtländer Brillant caption = Early Voigtländer Brillant type = 120 film TLR camera lens mount = fixed focus = manual exposure = manual flash = hot shoe frame rate = dimensions = The Voigtländer Brillant is a range… … Wikipedia
Asteroid-impact avoidance — Planetary defense redirects here. For defending against alien invasion in fiction, see alien invasion. Artist s impression of a major impact event. The collision between Earth and an asteroid a few kilometres in diameter releases as much energy… … Wikipedia
Anoxic event — As early as 1911, major oceanic currents were well mapped and understood, albeit without today s understanding of how they affect regional and global climatological conditions … Wikipedia
Chicxulub-Krater — Der Chicxulub Krater nach Messungen der Schwereanomalie 21.297222222222 89.594444444444 Koordinaten … Deutsch Wikipedia
Overpopulation — Graph of human population from 10,000 BC–2000 AD showing the unprecedented population growth since the 19th century Overpopulation is a condition where an organism s numbers exceed the carrying capacity of its habitat. The term often refers to… … Wikipedia
HEBREW LANGUAGE — This entry is arranged according to the following scheme: pre biblical biblical the dead sea scrolls mishnaic medieval modern period A detailed table of contents precedes each section. PRE BIBLICAL nature of the evidence the sources phonology… … Encyclopedia of Judaism
Dinosaur — For other uses, see Dinosaur (disambiguation). Dinosaurs Temporal range: Late Triassic–Late Cretaceous, 231.4–65.5 Ma … Wikipedia
K–T boundary — The K T boundary is a geological signature, usually a thin band, dated to 65.5 ± 0.3 (mya). [ [http://www.stratigraphy.org/cheu.pdf International commission for Stratigraphy] ] K is the traditional abbreviation for the Cretaceous Period, and T is … Wikipedia