- 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.
Determination of the distance between successive wavefronts of equal phase of a wave. This article discusses wavelength measurement of electromagnetic waves in the radio, microwave, infrared, and optical regions.
Industry:Science
Devices which are used to capture the sound waves of conversation originating in an ostensibly private setting in a form, usually as a magnetic tape recording, which can be used against the target by adverse interests.
Industry:Science
Folds are recognized where layered rocks have been distorted into wavelike forms. Some folds are fractions of an inch across and have lengths measured in inches, whereas others are a few miles wide and tens of miles long.
Industry:Science
Books, CD-ROMs, or computer-accessible sets showing stars, constellations, or other astronomical phenomena and their locations in the sky. Astronomical atlases provide two-dimensional views of the distributions of objects.
Industry:Science
Any device which measures the height of an aircraft. The two chief types are the pressure altimeter, which measures the aircraft's distance above sea level, and the radar altimeter, which measures distance above the ground.
Industry:Science
Devices that convey fluids, chiefly liquids, from a lower to a higher elevation or from a region of lower pressure to one of higher pressure. Pumping machinery may be broadly classified as mechanical or as electromagnetic.
Industry:Science
Betavoltaic devices are semiconductor energy conversion structures that are coupled with beta radiation sources. These devices are in many respects similar to solar cells and convert radiation directly into electrical energy.
Industry:Science
Electromagnetic radiation emitted from excited atomic nuclei as an integral part of the process whereby the nucleus rearranges itself into a state of lower excitation (that is, energy content). For the theory of gamma emission
Industry:Science
Computer-based, interactive applications having multiple media elements, including text, graphics, animations, video, and sound. Multimedia technology refers to both the hardware and software used to create and run such systems.
Industry:Science
As a piece of music progresses, it typically outlines a set of pitches by repeatedly sounding a subset of all the possible notes. When these notes are rearranged into ascending or descending order, they are called a musical scale.
Industry:Science
