Remote sensing is the art or science of telling something about an object without touching it (reconnaissance at a distance) It includes various methods of obtaining pictures or other forms of electromagnetic records of the Earth’s surface from a distance and the treatment and processing of the picture data. We sometimes say that a picture is worth a thousand words. Is this true, and if so, why? Because, pictures concisely convey information about positions, sizes, and interrelationships between objects. By their nature, they portray information about things that we can recognize as objects. These objects, in turn, can convey deep levels of meaning. With the use of different computer programs, digital cameras, sensors, and satellites can intricate information be captured, analyzed and distil to measure, monitor differences or variations such as ice melting or deforestation. To capture and analyses such data require exceptional skills or advanced technology; the special class of pictures that employ an overhead perspective (maps, aerial photographs, etc.), including many that are based on radiation not visible to the human eye. Such images have singular properties that offer unique advantages for the study of the Earth’s surface: pattern recognition, relationships, sizes, area’s depths, and heights; and, in general, to acquire information that is very difficult to acquire by other means.
Images can be captured with cameras that can use sensors. Electronic scanning, radar, microwave technology, etc. recorded outside human visual specter such as thermal, ultraviolet, infrared electronic. These can be applied to process various maps (conventional, thermal, resource surveys) for many different fields of agriculture, archaeology, forestry, geography, geology, etc. Since technologies such as Google Earth have become widely accessible and the cost is relative low, both scientist, as well as regular people, can effectively communicate their remote sensing imagery to the public. While high-end GIS and image manipulation packages are typically required to manipulate and process Earth observation data, there now exist several no-cost software systems that are available to the public. The most accessible of these, because of their simplicity of use, are Google Earth, GeoPDF, and ArcGIS Explorer. These offer an effective means communication from scientists to the public.
ECO-FASHION-DENIM AND DIAGRAMS DICTIONARIES OVERVIEW