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- Number of terms: 178089
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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 results of a series of independent trials, random variables, or errors often occur in fairly regular and predictable patterns. These patterns can be expressed mathematically, and the most important are called the binomial, normal, and Poisson distributions.
Industry:Science
The theoretical foundation of the four fundamental forces of nature, the electromagnetic, weak, strong, and gravitational interactions. Gauge symmetry lies at the heart of gauge theory. A gauge symmetry differs from an ordinary symmetry in two important respects:
Industry:Science
The study of ancient diseases and their origins. Paleopathology is especially important in the understanding of the origins, prevalence, and spread of infectious diseases, including how humans have contributed to the spread of disease and how they can overcome it.
Industry:Science
The science of chemical characterization and measurement. Qualitative analysis is concerned with the description of chemical composition in terms of elements, compounds, or structural units, whereas quantitative analysis is concerned with the measurement of amount.
Industry:Science
The state of having two natures, which is often applied in physics. The classic example is wave-particle duality. The elementary constituents of nature—electrons, quarks, photons, gravitons, and so on—behave in some respects like particles and in others like waves.
Industry:Science
The medical science concerned with x-rays, radioactive materials, and other ionizing radiations, and the application of the principles of this science to diagnosis and treatment of disease. Nonionizing radiations of infrared and ultrasound are also used for diagnosis.
Industry:Science
The mineral form of manganese carbonate. Calcium, iron, magnesium, and zinc have all been reported to replace some of the manganese. The equilibrium replacement of manganese by calcium has been determined and found to increase with the temperature of crystallization.
Industry:Science
The relaxation or approach of a magnetic system to an equilibrium or steady-state condition as the magnetic field is changed. This relaxation is not instantaneous but requires time. The characteristic times involved in magnetic relaxation are known as relaxation times.
Industry:Science
The subclass of Agnatha that includes the jawless vertebrates with a single median nostril, as opposed to the subclass Pteraspidomorpha, in which there are paired nostrils. The Cephalaspidomorpha includes the orders Osteostraci, Galeaspida, Petromyzontida, and Anaspida.
Industry:Science
The time rate of doing work. Like work, power is a scalar quantity, that is, a quantity which has magnitude but no direction. Some units often used for the measurement of power are the watt (1 joule of work per second) and the horsepower (550 ft-lb of work per second).
Industry:Science
