Scattered

Business / Finance / Scattered: Used for listed equity securities. Unconcentrated buy or sell interest.

Environmental Protection Agency (EPA)

Business / Agriculture / Environmental Protection Agency (EPA): An independent federal government agency established in 1970 and charged with coordinating effective governmental action concerning the environment, including setting standards, promulgating and enfor MORE

Reflectivity Factor (Z)

Technology / Radar / Reflectivity Factor (Z): Integral over the backscatter cross-section of the particles in a pulse volume. For particles small compared to the wavelength the scatter cross-section is d6, where d is the diameter of the particle. MORE

Crepuscular Rays

Science / Weather / Crepuscular Rays: Contrasting, alternating bright and dark rays in the sky. Sunlight is scattered by molecules and particles rendering these bright rays visible. Contrast is enhanced by haze, dust, or mist. These rays MORE

Backscatter

Science / Weather / Backscatter: A radar echo that is reflected, or scattered, at 180 degrees to the direction of the incident wave. Also the scattering of radiant energy into space before it reaches the earth's surface. MORE

Rain

Science / Weather / Rain: Precipitation in the form of liquid water droplets greater than 0.5 mm. If widely scattered, the drop size may be smaller. It is reported as 'R' in an observation and on the METAR. The intensity of ra MORE

Smoke

Science / Weather / Smoke: Small particles produced by combustion that are suspended in the air. A transition to haze may occur when the smoke particles have traveled great distance (25 to 100 miles or more), and when the large MORE

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