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71Rush Street (Chicago) — Infobox road maint= Department of Streets Sanitation highway name= Rush Street marker Rush Street Bridge (1890) Rush Street Bridge (1890) length= direction= One way North Two way from Kinzie (400 N) to Ohio (600 N) direction a= North terminus a=… …
72Principal component analysis — PCA of a multivariate Gaussian distribution centered at (1,3) with a standard deviation of 3 in roughly the (0.878, 0.478) direction and of 1 in the orthogonal direction. The vectors shown are the eigenvectors of the covariance matrix scaled by… …
73Midshipman — This article is about the naval rank. For the fish, see midshipman fish. For the sports teams of the U.S. Naval Academy, see Navy Midshipmen. For the novel about Horatio Hornblower, see Mr. Midshipman Hornblower. Common anglophone military ranks… …
74German railway signalling — Railway signals in Germany are regulated by the Eisenbahn Signalordnung (ESO, railway signalling rules). There are several signalling systems in use: History Reichsbahn Originally every rail company had its own signalling system. After these… …
75Wallpaper group — A wallpaper group (or plane symmetry group or plane crystallographic group) is a mathematical classification of a two dimensional repetitive pattern, based on the symmetries in the pattern. Such patterns occur frequently in architecture and… …
76Ajedrez — Juego de ajedrez Jugadores 2 Preparación 1 min …
77diagonale — [ djagɔnal ] n. f. • 1546; de diagonal 1 ♦ Ligne diagonale. Les diagonales d un polygone, d un rectangle, d un carré. La diagonale du fou aux échecs. Une pyramide n a pas de diagonale. Tracer, mener les diagonales. Nous plierons « par la… …
78Clifford algebra — In mathematics, Clifford algebras are a type of associative algebra. They can be thought of as one of the possible generalizations of the complex numbers and quaternions.[1][2] The theory of Clifford algebras is intimately connected with the… …
79Traffic light — The traffic light, also known as traffic signal, stop light, traffic lamp, stop and go lights, robot or semaphore, is a signaling device positioned at a road intersection, pedestrian crossing, or other location. Its purpose is to indicate, using… …
80Rip current — Riptide redirects here. For other uses, see Riptide (disambiguation). Rip current, as seen from above. The beach is visible at the right top …
