Photographs from the Himawari weather satellite are also handled by The Meteorological Agency, the Japanese Meteorological Association, and other organizations. All substances exposed on the Earth's surface are receiving electromagnetic radiation of various wavelengths, including light, and each substance has unique reflection and absorption characteristics. Also, when the temperature is raised each substance emits electromagnetic radiation at a particular frequency. From radiant emissions it is possible to infer the identity of a substance. The term remote sensing refers to such observation and analysis when it is conducted from a distance, without the need for collection or handling.
Special technology is used in the analysis and interpretation of various forms and characteristics.