- 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.
A voltage amplifier that amplifies the differential voltage between a pair of input nodes. For an ideal operational amplifier (also called an op amp), the amplification or gain is infinite.
Industry:Science
A warm-season annual cucurbit (<i>Cucumis sativus</i>) native to India and belonging to the plant order Campanulales.
Industry:Science
A water body north of the Pacific Ocean, 875,900 mi<sup>2</sup> (2,268,000 km<sup>2</sup>) in area, bounded by the Siberian and Alaskan landmasses to the west and east respectively, and the Aleutian-Komandorskiye island arc to the south. The Bering Sea is very productive biologically, and the ecosystem supports large populations of fish, shellfish, and marine birds and mammals.
Industry:Science
A wave having a form which, if plotted, would be the same as that of a trigonometric sine or cosine function. It generally results from the solution of a problem having a one-dimensional space coordinate, such as the transverse vibrations of a string, longitudinal vibrations of a bar, or the propagation of plane waves of electromagnetic radiation or sound.
Industry:Science
A wave that is generated by the acceleration of mass and travels at the speed of light. Gravitational waves are an implicit outcome of the special theory of relativity, and were explicitly put forward in Albert Einstein's theory of general relativity in 1916. Einstein showed that the acceleration of masses generates time-dependent gravitational fields which can carry energy away from their source at the speed of light.
Industry:Science
A waveform describes the variation of a quantity with respect to time. The necessary measurements to determine a waveform are normally carried out and presented in one of two ways: the amplitude may be presented as a function of time (time domain), or an analysis may be given of the relative amplitudes and phases of the frequency components (frequency domain). Although the simplest instruments measure and display the information in the same domain, it is possible to convert the results from the time domain to the frequency domain and vice verse by mathematical processing.
Industry:Science
A way to transfer the state of a quantum system over large distances by employing entanglement. Entanglement is a nonclassical connection between objects that Albert Einstein called “spooky.”
Industry:Science
A weapon that consists of integral rocket propulsion, means of pointing or guiding the weapon's velocity vector to a prescribed orientation at the position and time of rocket engine shutoff or burnout, and a warhead. In certain applications, means of deploying multiple warheads or submunitions may be incorporated. Ballistic missiles are conceptually simple weapons whose implementation becomes more complex with increasing accuracy, range, and defense penetration requirements.
Industry:Science
A welding process used to join similar and dissimilar materials at very rapid speed. It is, therefore, a very attractive welding process in mass production of good-quality welds. The ability to join dissimilar materials provides further flexibility in the design of mechanical components.
Industry:Science
A well-defined procedure to solve a problem. The study of algorithms is a fundamental area of computer science. In writing a computer program to solve a problem, a programmer expresses in a computer language an algorithm that solves the problem, thereby turning the algorithm into a computer program.
Industry:Science
