- 行业: Printing & publishing
- 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.
Stresses exerted in a body by the gravitational action of another, and related phenomena resulting from these stresses. Every body in the universe raises tides, to some extent, on every other. This article deals only with tides on the Earth, since these are fundamentally the same as tides on all bodies. Sometimes variations of sea level, whatever their origin, are referred to as tides.
Industry:Science
The amount of energy release when an electron <i>e</i> at rest is captured by a species M, producing the negative ion M<sup>-</sup>. The electron affinity of a species M can also be thought of as the ionization potential of the negative ion M<sup>-</sup>. In these definitions, it is assumed that both M and M<sup>-</sup> are in the lowest electronic, vibrational, and rotational state.
Industry:Science
The branch of mathematics dealing with the solution of equations. These equations involve unknowns, or variables, along with fixed numbers from a specified system. The origins of algebra were based on the need to develop equations that modeled real-world problems. From this came a very extensive theory based on the need to find the values that can be successfully used in the equations.
Industry:Science
The emission of electrons from the surface of a solid into vacuum caused by bombardment with charged particles, in particular, with electrons. The mechanism of secondary emission under ion bombardment is quite different from that under electron bombardment; the discussion here is limited to the latter case because it is in this sense that the term secondary emission is generally used.
Industry:Science
The Colorado River is considered to be one of the most regulated networks of natural, interacting water channels in the world. Beginning with the Bureau of Reclamation's high-dam-building period in the 1910s, 19 dams were erected along the Colorado River's main channel and tributary waters.
Industry:Science
The hot material, partly or wholly liquid, from which igneous rocks form. Besides liquids, solids and gas may be present in magma. Most observed magmas are silicate melts with associated crystals and gas, but some inferred magmas are carbonate, phosphate, oxide, sulfide, and sulfur melts.
Industry:Science
Techniques to measure the properties and parameters of ionized gases. Plasmas are gases in which a sufficient proportion of the atoms are ionized that the resulting mixture of free electrons and positively charged ions exhibits collective behavior resulting from electromagnetic interactions.
Industry:Science
The change of length of a ferromagnetic substance when it is magnetized. More generally, it is the phenomenon that the state of strain of a ferromagnetic sample depends on the direction and extent of magnetization. The phenomenon has an important application in magnetostriction transducers.
Industry:Science
The formation of macromolecules are formed from cyclic monomers such as cyclic hydrocarbons, ethers, esters, amides, siloxanes, and sulfur (eight-membered ring). Thus, ring-opening polymerization is of particular interest, since macromolecules of almost any chemical structure can be prepared.
Industry:Science
The isolation, in structures, of those vibrations or motions that are classified as mechanical vibration. Vibration isolation involves the control of the supporting structure, the placement and arrangement of isolators, and control of the internal construction of the equipment to be protected.
Industry:Science
