a downward arrow
71lock — lock1 lockless, adj. /lok/, n. 1. a device for securing a door, gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts propelled and withdrawn by a mechanism operated by a key, dial, etc. 2. a contrivance… …
72Eigenvalues and eigenvectors — For more specific information regarding the eigenvalues and eigenvectors of matrices, see Eigendecomposition of a matrix. In this shear mapping the red arrow changes direction but the blue arrow does not. Therefore the blue arrow is an… …
73flight — Synonyms and related words: AWOL, Brownian movement, French leave, a mass of, a world of, abandonment, abscond, absence without leave, absquatulation, acciaccatura, advance, aeronautics, aeroplane, air arm, air corps, air force, air service, air… …
74Unemployment — World unemployment rates[1] as of January 2009[update] Unemployment (or …
75Sub-orbital spaceflight — A sub orbital spaceflight (or sub orbital flight) is a spaceflight in which the spacecraft reaches space, but its trajectory intersects the atmosphere or surface of the gravitating body from which it was launched, so that it does not complete one …
76Ankylosing spondylitis — Classification and external resources An ankylosing spine in which the vertebrae become fused together. ICD 10 M …
77Interstate 287 — Map of New Jers …
78History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …
79Disclosure widget — in the GNOME file dialog. A disclosure widget or expander is a graphical user interface element (widget) that is used to show or hide a collection of child widgets in a specific area of the interface. The widget hides non essential settings or… …
80Fisheries glossary — This is a glossary of terms used in fisheries, fisheries management and fisheries science. A * Abundance is a measure of how many fish are in a population or a fishing ground. See relative abundance and absolute abundance.* Acoustic survey a… …
