New York Stock Exchange, one of the world’s largest marketplaces for securities and other exchange-traded investments, located in New York City.

Drug, any chemical substance that affects the functioning of living things and the organisms (such as bacteria, fungi, and viruses) that infect them. Pharmacology, the science of drugs, deals with all aspects of drugs in medicine, including their mechanism of action, physical and chemical

Russia, country that stretches over a vast expanse of eastern Europe and northern Asia. Once the preeminent republic of the Union of Soviet Socialist Republics (U.S.S.R.; commonly known as the Soviet Union), Russia became an independent country after the dissolution of the Soviet Union in December 1991. Russia is a land of superlatives. By far the world’s largest country, it covers nearly twice the territory of Canada, the second largest. It extends across the whole of northern Asia and the eastern third of Europe, spanning 11 time zones and incorporating a great range of environments and landforms, from deserts to

Other articles where tidal bulge is discussed: tidal friction: …on the Earth prevents the tidal bulge, which is raised in Earth’s seas and crust by the Moon’s pull, from staying directly under the Moon. Instead, the bulge is carried out from directly under the Moon by the rotation of the Earth, which spins almost 30 times for every time…

rose window, also called wheel window, in Gothic architecture, decorated circular window, often glazed with stained glass. Scattered examples of decorated circular windows existed in the Romanesque period (Santa Maria in Pomposa, Italy, 10th century). Only toward the middle of the 12th century, however, did the idea appear of making a rich decorative motif out of a round window. At this time the simple rose window became a distinguishing characteristic of many transitional and early Gothic churches. It was used mainly at the west end of the nave and the ends of the transepts. The introduction of developed bar tracery

collision, also called impact, in physics, the sudden, forceful coming together in direct contact of two bodies, such as, for example, two billiard balls, a golf club and a ball, a hammer and a nail head, two railroad cars when being coupled together, or a falling object and a floor. Apart from the properties of the materials of the two objects, two factors affect the result of impact: the force and the time during which the objects are in contact. It is a matter of common experience that a hard steel ball dropped on a steel plate will rebound to

The answer to the age-old question—plus, why do zebras have stripes at all?

As the head of the government of the United States, the president is arguably the most powerful government official in the world. The president is elected to a four-year term via an electoral college system. Since the Twenty-second Amendment was adopted in 1951, the American presidency has been