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41United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
42Computed tomography — tomos (slice) and graphein (to write).Computed tomography was originally known as the EMI scan as it was developed at a research branch of EMI, a company best known today for its music and recording business. It was later known as computed axial… …
43arts, East Asian — Introduction music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature. Some studies of East Asia… …
44Retina — For the Retina display in the iPhone 4, see iPhone 4#Display. Retina Right human eye cross sectional view. Courtesy NIH National Eye Institute. Many animals hav …
45Origins of the American Civil War — For events following South Carolina s declaration of secession from the Union, see Battle of Fort Sumter and American Civil War. The Battle of Fort Sumter was the first stage in a conflict that had been brewing for decades. The main explanation… …
46Church Army Chapel, Blackheath — Drawing by E.T. Spashett General information Architectural style Modern …
47American literature — Introduction the body of written works produced in the English language in the United States. Like other national literatures, American literature was shaped by the history of the country that produced it. For almost a century and a… …
48X-ray computed tomography — For non medical computed tomography, see Industrial CT Scanning. catSCAN redirects here. For the Transformers character, see Transformers: Universe. X ray computed tomography Intervention A patient is receiving a CT scan for cancer. Outsid …
49Asterism (astronomy) — In astronomy, an asterism is a pattern of stars seen in Earth s sky which is not an official constellation. Like constellations, they are composed of stars which, while they are in the same general direction, are not physically related, often… …
50R. Nelson Snider High School — Infobox US school name = R. Nelson Snider High School image caption = motto = Nihil Sine Magno Labore (Latin meaning Nothing Without Great Work ) established = 1964 type = Free public district = Fort Wayne Community Schools grades = 9 12… …
