SAT words ₁₉

(Geometry) Riemann was the first one to do extensive work generalizing the idea of a surface to higher dimensions. The name manifold comes from Riemann's original German term, Mannigfaltigkeit, which William Kingdon Clifford translated as “manifoldness”. In his Göttingen inaugural lecture, Riemann described the set of all possible values of a variable with certain constraints as a Mannigfaltigkeit, because the variable can have many values.

In February, while discussing New Jersey's newly amended income-tax law, which allows the rich to pay less (proportionally) than the middle class, Christie was asked about Warren Buffett's observation that he paid less federal income taxes than his personal secretary, and that wasn't fair. “He should just write a check and shut up,” Christie responded, with his typical verve. “I'm tired of hearing about it. If he wants to give the government more money, he's got the ability to write a check — go ahead and write it.”

According to unnamed sources in the mid 1980s, the CIA created an intelligence unit in Haiti, known as SIN, whose purported purpose was anti-drug activity, but was in reality “used as an instrument of political terror”, and was heavily involved in drug trafficking. The members of the unit were known to torture supporters of populist leader Jean-Bertrand Aristide, and threatened to kill the local head of the DEA who had investigated them and exposed their operations. According to one U.S. official, the unit was trafficking drugs and never produced any useful drug intelligence.

Generally, mantises protect themselves by camouflage and concealment. When directly threatened, many mantis species stand tall and spread their forelegs, with their wings fanning out wide. The fanning of the wings makes the mantis seem larger and more threatening, with some species having bright colors and patterns on their hind wings and inner surfaces of their front legs for this purpose. If harassment persists, a mantis may strike with its forelegs and attempt to pinch or bite. As part of the threat display, some species also may produce a hissing sound by expelling air from the abdominal spiracles. When flying at night, at least some mantises are able to detect the echolocation sounds produced by bats, and when the frequency begins to increase rapidly, indicating an approaching bat, they will stop flying horizontally and begin a descending spiral toward the safety of the ground, often preceded by an aerial loop or spin.

3D films have existed in some form since 1915, but had been largely relegated to a niche in the motion picture industry because of the costly hardware and processes required to produce and display a 3D film, and the lack of a standardized format for all segments of the entertainment business. Nonetheless, 3D films were prominently featured in the 1950s in American cinema, and later experienced a worldwide resurgence in the 1980s and 1990s driven by IMAX high-end theaters and Disney themed-venues. 3D films became more and more successful throughout the 2000s, culminating in the unprecedented success of 3D presentations of Avatar in December 2009 and January 2010.

Cubrilovic peeked into the extension's source code and found the private certificate, which Yahoo! uses to sign the application to prove it is genuine and unaltered. The result, he says, is that a miscreant could forge a malicious extension that would be verified by Google's web browser as coming from Yahoo!

Bogdan and his arms-dealer cousin inform Ethan that Hendricks will be in Mumbai. Hendricks facilitated the sale of a defunct Soviet military satellite to Indian telecommunications entrepreneur Brij Nath.

A black operation or black op is a covert operation typically involving activities that are highly clandestine and often outside of standard military protocol or even against the law.

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The Bonus Army was the popular name of an assemblage of some 43,000 marchers — 17,000 World War I veterans, their families, and affiliated groups — who gathered in Washington, D.C., in the spring and summer of 1932 to demand immediate cash-payment redemption of their service certificates. Its organizers called it the Bonus Expeditionary Force to echo the name of World War I's American Expeditionary Force, while the media called it the Bonus March. It was led by Walter W. Waters, a former Army sergeant.