constant velocity target
121Membrane transport — In cellular biology the term membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes namely lipid bilayers that contain proteins embedded in them …
122Iron sight — Sight picture through iron sights of an H K MP5 submachine gun. The annular shroud around the front post sight is aligned with the rear peep sight to ensure the weapon is properly trained. Iron sights are a system of shaped alignment markers… …
123literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …
124space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
125Quantity theory of money — In economics, the quantity theory of money is a theory emphasizing the positive relationship of overall prices or the nominal value of expenditures to the quantity of money. Origins and development of the quantity theory The quantity theory… …
126Ballistic coefficient — The ballistic coefficient (BC) of a body is a measure of its ability to overcome air resistance in flight. It is inversely proportional to the deceleration mdash;a high number indicates a low deceleration. BC is a function of mass, diameter, and… …
127Matter wave — This article is about the quantum mechanical concept of all matter having a duality model as a wave. For the ordinary type of wave propagating through material media, see Mechanical wave. In quantum mechanics, a matter wave or de Broglie wave (… …
128Dive bomber — For other uses, see Dive Bomber (disambiguation). An SBD Dauntless drops its bomb. The dive brakes are extended and are visible behind the wings. A dive bomber is a bomber aircraft that dives directly at its targets in order to provide greater… …
