- 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 energy transmitted from the Sun. The upper atmosphere of Earth receives about 1.5 × 10<sup>21</sup> watt-hours (thermal) of solar radiation annually. This vast amount of energy is more than 23,000 times that used by the human population of this planet, but it is only about one two-billionth of the Sun's massive outpouring—about 3.9 × 10<sup>20</sup> MW.
Industry:Science
The branch of geography that examines human and physical activities on the Earth's surface using models and statistical analysis. The primary areas in which mathematical methods are used include the analysis of spatial patterns, the processes that are responsible for creating and modifying these patterns, and the interactions among spatially separated entities.
Industry:Science
The association or combination of a solute unit (ionic, molecular, or particulate) with solvent molecules. This association may involve chemical or physical forces, or both, and may vary in degree from a loose, indefinite complex to the formation of a distinct chemical compound. Such a compound contains a definite number of solvent molecules per solute molecule.
Industry:Science
The branch of biology in which tissues or cells of higher animals and plants are grown artificially in a controlled environment. Such studies were undertaken in the hope that the behavior of various body components could be studied and their potentialities more readily analyzed under the simpler and more readily manipulated conditions possible in the test tube.
Industry:Science
The family Ailuropodidae contains two species of pandas—the giant panda (<i>Ailuropoda melanoleuca</i>) and the lesser or red panda (<i>Ailurus fulgens</i>). Until relatively recently, the giant panda had been classified in the family Ursidae with the bears, and the red panda had been included in the family Procyonidae along with raccoons, ringtails, and coatis.
Industry:Science
The field of dynamics as applied to celestial bodies moving under their mutual gravitational influence in systems with few bodies. It usually describes and predicts motions in the solar system, both of natural bodies such as planets, satellites, asteroids, and comets, and of artificial bodies such as space probes. It can also be applied to small stellar systems.
Industry:Science
The ground state of a metal in which the conduction-electron-spin density has a sinusoidal variation in space, with a wavelength usually incommensurate with the crystal structure. This antiferromagnetic state normally occurs in metals, alloys, and compounds with a transition-metal component. It occurs also, however, in quasi-one-dimensional organic conductors.
Industry:Science
The impulse produced by a rocket divided by the mass <i>m</i><sub><i>p</i></sub> of propellant consumed. Specific impulse <i>I</i><sub><i>sp</i></sub> is a widely used measure of performance for chemical, nuclear, and electric rockets. It is usually given in seconds for both U.S. Customary and International System (SI) units, but this is not strictly correct.
Industry:Science
The absorption of atmospheric water vapor by a crystalline solid until the crystal eventually dissolves into a saturated solution. This behavior is well known for certain salts such as hydrated calcium chloride, CaCl<sub>2</sub> · 6H<sub>2</sub>O, and zinc chloride, ZnCl<sub>2</sub>, but it is a property of all soluble salts in air of sufficiently high humidity.
Industry:Science
Strongly interacting particles are either baryons or mesons. Baryons, such as the proton and neutron, have half-integer spins and are fermions, whereas mesons are bosons with integer spin. The lightest meson is the pion, denoted π, which was originally predicted to exist as the carrier of the powerful force that grips the protons and neutrons within atomic nuclei.
Industry:Science
