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Eng ID | Term | Definition |
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3941 | pluviograph | RAIN GAUGE which includes an arrangement for the time recording of the depth of water from PRECIPITATION. |
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3942 | pocket compass | See COMPASS. |
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3943 | Poincaré wave | A long period gravity wave. The superposition of incident and reflected plane waves (Sverdrup Waves) such that the composite wave fronts a... more |
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3944 | point | One thirty-second of a circle, or 11 1/4 DEGREES. Also called COMPASS POINT when used in reference to COMPASS directions. The extreme en... more |
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3945 | pointing line | See COLLIMATION: LINE OF. |
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3946 | point of Aries | See EQUINOX. |
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3947 | point of arrival | See ARRIVAL: POINT OF. |
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3948 | point of destination | See DESTINATION: POINT OF. |
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3949 | point of origin | See COORDINATES: ORIGIN OF. |
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3950 | point of symmetry | The point in the FOCAL PLANE of a CAMERA about which all lens DISTORTIONS are symmetrical. If the LENS were perfectly mounted, the point o... more |
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3951 | polar aurora | See AURORA. |
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3952 | polar axis | See AXIS. |
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3953 | polar bearing | See BEARING. |
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3954 | polar chart | See CHART. |
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3955 | polar circle | Either the ARCTIC CIRCLE (north polar circle) or the ANTARCTIC CIRCLE (south polar circle). |
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3956 | polar coordinates | See COORDINATES. |
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3957 | polar distance | ANGULAR DISTANCE from a CELESTIAL POLE; the arc of an HOUR CIRCLE between a CELESTIAL POLE, usually the ELEVATED POLE, and a point on the CE... more |
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3958 | polar front | Quasi-permanent FRONT of great extent, of middle latitudes, which separates relatively cold polar air and relatively warm tropical air, and ... more |
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3959 | polar ice | SEA ICE that is more than one year old (in contrast to WINTER ICE). The WMO code defines polar ice as any SEA ICE more than one year old and... more |
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3960 | Polaris correction | A CORRECTION to be applied to the OBSERVED ALTITUDE of Polaris to obtain the LATITUDE. |