- 行业: Printing & publishing
- Number of terms: 178089
- Number of blossaries: 0
- Company Profile:
McGraw Hill Financial, Inc. is an American publicly traded corporation headquartered in Rockefeller Center in New York City. Its primary areas of business are financial, publishing, and business services.
The Inductrack is a magnetic levitation (maglev) concept for trains and other moving objects. A small working model of an Inductrack has demonstrated stable levitation over a 20-m (65-ft) track. As yet, no full-scale demonstration of the concept has been made.
Industry:Science
The flow of thermal energy through a substance from a higher- to a lower-temperature region. Heat conduction occurs by atomic or molecular interactions. Conduction is one of the three basic methods of heat transfer, the other two being convection and radiation.
Industry:Science
The common name for a number of cypriniform fishes of the family Cyprinidae. The carp originated in China, where for centuries it was raised for food. It was imported into the United States from Europe, where it also has been raised for years as a source of food.
Industry:Science
Television transmitted to a particular audience at specific locations via coaxial cables, telephone wires, fiber-optic strands, microwave radio systems, or communications satellites, as compared to open-circuit (broadcast) television intended for the general public.
Industry:Science
The artificial application of water to the soil to produce plant growth. Irrigation also cools the soil and atmosphere, making the environment favorable for plant growth. The use of some form of irrigation is well documented throughout the history of civilization.
Industry:Science
The area of applied mathematics and operations research concerned with finding the largest or smallest value of a function subject to constraints or restrictions on the variables of the function. Nonlinear programming is sometimes referred to as nonlinear optimization.
Industry:Science
The <i>Infrared Space Observatory</i> (<i>ISO</i>) is an astronomical satellite launched in November 1995. Its infrared observations, which address virtually all fields of astronomy, represent a great advance over the <i>Infrared Astronomical Satellite</i> (<i>IRAS</i>).
Industry:Science
The condition in which the phase angle between two alternating quantities is 90°, corresponding to one-quarter of an electrical cycle. The electric and magnetic fields of electromagnetic radiation are in space quadrature, which means that they are at right angles in space.
Industry:Science
The field of gravitational attraction of the Earth. Since, at the Earth's surface, the small centrifugal force due to the Earth's rotation is inseparably superimposed on the attraction, the gravity field is usually understood to include also the effect of the centrifugal force.
Industry:Science
The application of isolators to alleviate the effects of shock on a mechanical device or system. Although the term shock has no universally accepted definition in engineering, it generally denotes suddenness, either in the application of a force or in the inception of a motion.
Industry:Science
