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11Southeastern (train operating company) — This article is about the company that commenced operations in April 2006. For the previous operator, see South Eastern Trains. Southeastern …
12Electricity meter — Typical North American domestic analog electricity meter …
13Mechanical calculator — An old Russian mechanical calculator. A mechanical calculator is a device used to perform the basic operations of arithmetic. Mechanical calculators are comparable in size to small desktop computers and have been rendered obsolete by the advent… …
14Central Avenue Corridor — Central Avenue Location: Phoenix North end: 10499 North (near Sunnyslope) South end: 11699 South (in South Mountain Park) The Central Avenue Corridor is a significant stretch of north south Central Avenue, in Phoenix, Arizona. Roughly… …
15Slide rule — For other uses, see Slide rule (disambiguation). A typical ten inch student slide rule (Pickett N902 T simplex trig). The slide rule, also known colloquially as a slipstick,[1] is a mechanical analog computer. The slide rule is used primarily for …
16Charing Cross railway station — Not to be confused with Charing Cross tube station or Charing Cross (Glasgow) railway station. Charing Cross London Charing Cross Appr …
17Angular mil — An angular mil, also mil, is a unit of angle. All versions of the angular mil are approximately the same size as a trigonometric milliradian. Contents 1 History 2 Mathematical principle 3 Use …
18Rotary table — A rotary table is a precision work positioning device used in metalworking. It enables the operator to drill or cut work at exact intervals around a fixed (usually horizontal or vertical) axis. Some rotary tables allow the use of index plates for …
19optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …
20performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical. The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …
