INFRARED - Electromagnetic waves between the radio waves and visible light spectrums. They are invisible and commonly given off by hot objects. Infrared heating is abundant from the sun. Also called IR.
Radar Cross SectionThe area of a fictitious, perfect reflector of electromagnetic waves (e.g., metal sphere) that would reflect the same amount of energy back to the radar as the actual target (e.g., lumpy snowflake).
radar equipment used for generating and amplifying a radio frequency (RF) carrier signal, modulating the carrier signal with intelligence, and feeding the modulated carrier to an antenna for radiation into space as electromagnetic waves.
Radiation Emission or transfer of energy in the form of electromagnetic waves or particles.
Radar Echo:Electromagnetic waves scattered back to the radar receiver and displayed on the PPI Scope from targeted precipitation.
Radar Ground Clutter: Reflection from trees, buildings, hills in close around the radar.
Doppler effect is often used to mean frequency shifts (Doppler shift) of acoustic and electromagnetic waves because of relative motion between sources and observers.
radiationEnergy transported through electromagnetic waves. These waves do not need molecules to propagate them, and in a vacuum they travel at nearly 300,000 kilometers per second. See shortwave radiation and longwave radiation.
Antenna A wire or set of wires used to send and receive electromagnetic waves.
The area of a fictitious, perfect reflector of electromagnetic waves (e.g., metal sphere) that would reflect the same amount of energy back to the radar as the actual target (e.g., lumpy snowflake).
convert heat into electromagnetic waves. If vacuum is filled with electromagnetic waves (say, radiation from walls of vacuum chamber, or relic microwave radiation in space) then the system will exchange by energy with these waves and thermally ...
Radiation Energy emitted in the form of electromagnetic waves. Radiation has differing characteristics depending upon the wavelength.
Energy transport through electromagnetic waves. See shortwave radiation and longwave radiation.
Radiation Fog
A fog that forms when outgoing longwave radiation cools the near-surface air below its dew point temperature.
Radiation- The transferring of energy through electromagnetic waves.
Rain- Liquid precipitation with drops larger than .02 inches in diameter.
Rainbow- An arc or circle of colored light caused by the refraction of light by water droplets in the air.
Radio waves Long-wavelength, low-frequency electromagnetic waves.
Radiosonde A small balloon-borne instrument package equipped with a radio transmitter that measures vertical profiles (soundings) of temperature, pressure, ...
Antenna: A transducer between electromagnetic waves radiated through space and electromagnetic waves contained by a transmission line.
Energy transfer in the form of electromagnetic waves or particles that release energy when absorbed by an object. See ultraviolet radiation, infrared radiation, solar radiation, longwave radiation, terrestrial radiation.
Radiation budget(1) ...
solar radiation: electromagnetic waves that come from the sun. Examples are UV rays, visible light, and infrared radiation.
The transferring of energy through electromagnetic waves.
Radiation Fog
Fog which forms over the land in still conditions.
radiation—The emission of energy by a medium and transferred, either through free space or another medium, in the form of electromagnetic waves.
 See also: Light, Temperature, Atmosphere, Surface, Water
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