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Eng ID | Term | Definition |
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3961 | polarization | A condition of RADIANT ENERGY in which the VIBRATIONS take place in a regular manner, as in a straight line, circle or ellipse, in a plane p... more |
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3962 | polarization error | See ERROR. |
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3963 | polar orthographic projection | See PROJECTION. |
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3964 | polder | LAND reclaimed from the SEA or other body of water by the construction of an EMBANKMENT to restrain the water. See DIKE. |
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3965 | pole | Either of the two points of intersection of the surface of a sphere or SPHEROID and its AXIS. The origin of a system of POLAR COORDINATES. E... more |
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3966 | pole: celestial | Either of the two points of intersection of the CELESTIAL SPHERE and the extended AXIS of the EARTH, labelled N or S to indicate either the ... more |
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3967 | pole: depressed | The CELESTIAL POLE below the HORIZON, of opposite NAME to the LATITUDE. |
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3968 | pole: elevated | The CELESTIAL POLE above the HORIZON, agreeing in NAME with the LATITUDE. |
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3969 | pole: geographic(al) | Either of the two points of intersection of the surface of the EARTH with its AXIS, labelled N or S to indicate either the north geographica... more |
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3970 | pole: magnetic | See MAGNETIC POLE. |
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3971 | pole: terrestrial | One of the POLES of the EARTH. See POLE. |
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3972 | pollution | The direct or indirect alteration of the physical, chemical, thermal, biological or radioactive properties of any part of the environment i... more |
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3973 | polyconic projection | See PROJECTION. |
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3974 | polygon | A non-selfintersecting, closed chain defining the boundary of an area. |
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3975 | polynia | A water area enclosed in ICE, generally fast; this water area remains constant and usually has an oblong shape; sometimes limited to one sid... more |
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3976 | polyvinyl corer | See CORER: HYDROPLASTIC. |
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3977 | pond | A small body of still water of artificial formation, its BED being either hollowed out of the SOIL or formed by embanking and damming up a ... more |
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3978 | pontoon | Floating structure, usually rectangular in shape which serves as landing, pierhead or bridge support. |
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3979 | pool | A small body of still or standing water, permanent or temporary; chiefly one of natural formation. A deep or still place in a RIVER or STRE... more |
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3980 | porosity | The ratio of the aggregate volume of pore space in a ROCK or SEDIMENT to its total volume, usually expressed as a percentage. |