a method of collecting information about an object, place or phenomenon without actual physical contact is known as remote sensing. How many remote sensing technologies are there based on source of energy? which are they?
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Remote sensing is the science of obtaining information about objects or areas from a distance, typically from aircraft or satellites. A LIDAR (Light Detection and Ranging) image created with data collected by NOAA's National Geodetic Survey. ... In contrast, active sensors use internal stimuli to collect data about Earth.
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