longitudinal momentum
51military technology — Introduction range of weapons, equipment, structures, and vehicles used specifically for the purpose of fighting. It includes the knowledge required to construct such technology, to employ it in combat, and to repair and replenish it.… …
52Auto Union racing car — Auto Union Type C The Auto Union Grand Prix racing cars types A to D, were developed and built by a specialist racing department of Horch works in Zwickau between 1933 and 1939. Between 1935 and 1937 Auto Union cars won 25 races, driven by Ernst… …
53spin — I. verb (spun; spinning) Etymology: Middle English spinnen, from Old English spinnan; akin to Old High German spinnan to spin and perhaps to Lithuanian spęsti to set (a trap) Date: before 12th century intransitive verb 1. to draw out and twist… …
54Quantum cascade laser — Quantum cascade lasers (QCLs) are semiconductor lasers that emit in the mid to far infrared portion of the electromagnetic spectrum and were first demonstrated by Jerome Faist, Federico Capasso, Deborah Sivco, Carlo Sirtori, Albert Hutchinson,… …
55Palestine — /pal euh stuyn / for 1, 2; /pal euh steen / for 3, n. 1. Also called Holy Land. Biblical name, Canaan. an ancient country in SW Asia, on the E coast of the Mediterranean. 2. a former British mandate (1923 48) comprising part of this country,… …
56physical science — physical scientist. 1. any of the natural sciences dealing with inanimate matter or with energy, as physics, chemistry, and astronomy. 2. these sciences collectively. [1835 45] * * * Introduction the systematic study of the inorganic world …
57painting, Western — ▪ art Introduction history of Western painting from its beginnings in prehistoric times to the present. Painting, the execution of forms and shapes on a surface by means of pigment (but see also drawing for discussion of depictions in …
58Dirichlet eigenvalue — In mathematics, the Dirichlet eigenvalues are the fundamental modes of vibration of an idealized drum with a given shape. The problem of whether one can hear the shape of a drum is: given the Dirichlet eigenvalues, what features of the shape of… …
59RMS Lusitania — was a British luxury ocean liner owned by the Cunard Steamship Company and built by John Brown and Company of Clydebank, Scotland. Christened and launched on Thursday, 7 June 1906, Lusitania met a disastrous end as a casualty of the First World… …
60Light — For other uses, see Light (disambiguation). Visible light redirects here. For other uses, see Visible light (disambiguation) …
