lossy earth
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Surface wave — Diving grebe creates surface waves In physics, a surface wave is a mechanical wave that propagates along the interface between differing media, usually two fluids with different densities. A surface wave can also be an electromagnetic wave guided … Wikipedia
Beverage antenna — The Beverage Antenna is a relatively inexpensive but very effective long wire receiving antenna used by amateur radio, shortwave listening, and longwave radio DXers and military applications. Harold H. Beverage experimented with receiving… … Wikipedia
Non-line-of-sight propagation — Non line of sight (NLOS) or near line of sight is a term used to describe radio transmission across a path that is partially obstructed, usually by a physical object in the innermost Fresnel zone. Many types of radio transmissions depend, to… … Wikipedia
Mars Exploration Rover — Artist s conception of rover on Mars Part of a panorama taken by the Spi … Wikipedia
GIS file formats — A GIS file format is a standard of encoding geographical information into a file. They are created mainly by government mapping agencies (such as the USGS) or by GIS software developers.Metadata often includes: * Elevation data, either in raster… … Wikipedia
Tagged Image File Format — TIF and TIFF redirect here. For other uses, see TIF (disambiguation) and TIFF (disambiguation). Tagged Image File Format Filename extension .tiff, .tif Internet media type image/tiff, image/tiff fx Type code TIFF Unifo … Wikipedia
Translations of The Lord's Prayer — The Lord s Prayer is a common tool used to compare languages. Since the publication of the Mithridates booksTwo examples are Mithridates de differentis linguis , Conrad Gessner, 1555; and Mithridates oder allgemeine Sprachenkunde mit dem Vater… … Wikipedia
Telluric current — A telluric current (from Latin tellūs , earth ) is an electric current which moves underground or through the sea. Telluric currents result from both natural causes and human activity, and the discrete currents interact in a complex pattern. The… … Wikipedia
Anechoic chamber — An anechoic chamber An anechoic chamber (an echoic meaning non echoing or echo free) is a room designed to stop reflections of either sound or electromagnetic waves. They are also insulated from exterior sources of noise. The combination of both… … Wikipedia
List of distributed computing projects — A list of distributed computing projects. Berkeley Open Infrastructure for Network Computing (BOINC) The Berkeley Open Infrastructure for Network Computing (BOINC) platform is currently the most popular volunteer based distributed computing… … Wikipedia
Path loss — (or path attenuation) is the reduction in power density (attenuation) of an electromagnetic wave as it propagates through space. Path loss is a major component in the analysis and design of the link budget of a telecommunication system.This term… … Wikipedia