Any reasonable means taken by any person after an incident has occurred to prevent or minimized damage such as pollution etc.

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Factors that allow substandard acts, practices, or conditions to exist or develop. Uncorrected Causal Factors will lead to incidents. An Incident often has more than one Causal factor.


The ejection of electrons from a solid (or less commonly, a liquid) by incident electromagnetic radiation. Also known as external photoelectric effect.


Control of a circuit or piece of equipment by changes in incident light.


[ENG ACOUS] A hydrophone whose response is fundamentally independent of the incident sound wave's angle of arrival.


A body that reflects some fraction of the radiation incident upon it; all real bodies are of this nature.


An ideal emitter which radiates energy at the maximum possible rate per unit area at each wavelength for any given temper- ature. A blackbody also absorbs all the radiant energy in the near visible spectrum incident upon it. No actual substance behaves as a true blackbody.


A radar reflector consisting of three mutually perpendicular flat reflecting surfaces designed to return incident electro- magnetic radiation toward its source. The reflector is used to render objects such as buoys and sailboats more conspicuous to radar observations. Since maximum effectiveness is obtained when the incident beam coincides with the axis of symmetry of the reflector, clusters of reflectors are sometimes used to insure that the object will be a good reflector in all directions. Also called TRIHEDRAL REFLECTOR.


A device composed of dielectric material which returns the greater part of the incident electromagnetic waves parallel to the direction of incidence.


A radar reflector consisting of two flat surfaces intersecting mutually at right angles. Incident radar waves entering the aperture so formed with a direction of incidence perpendicular to the edge, are returned parallel to their direction of incidence. Also called RIGHT ANGLE REFLECTOR.


1. Radar which transmits a SIGNAL and receives the incident energy reflected from an object to detect the object. 2. As defined by the International Telecommunications Union (ITU), a radiodetermination system based on the comparison of reference signals with radio signals reflected from a position to be deter- mined.

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