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Eng ID | Term | Definition |
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3741 | passage | A narrow navigable CHANNEL, especially one through REEFS or ISLANDS. Sometimes called a PASS, or in New England waters a HOLE. |
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3742 | passage: meridian | See MERIDIAN TRANSIT. |
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3743 | passive system | A system which records energy emitted or reflected but does not produce or transmit energy of its own. |
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3744 | passometer | A pocket-size instrument which registers the number of steps taken by the pedestrian carrying it. See PEDOMETER. |
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3745 | pass point | In PHOTOGRAMMETRY, a point whose horizontal and/or vertical position is determined from PHOTOGRAPHS by photogrammetrical methods and whic... more |
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3746 | patch | In ice terminology, a collection of PACK ICE, less than 10 km across. |
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3747 | patent log | See LOG. |
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3748 | path | A line of movement; course taken, as the path of a METEOR. A line connecting a series of points in space and constituting a proposed or trav... more |
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3749 | pattern | See LATTICE. |
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3750 | P-code | The Precise (or Protected) GPS code; a very long (about 1014 bit) sequence of pseudo-random binary biphase modulations on the GPS carrier at... more |
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3751 | peak | A prominent elevation either pointed or of very limited extent across the SUMMIT. Also called pike. |
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3752 | pebble | A small STONE worn smooth and rounded by the action of water, SAND, ICE, etc. ranging in diameter between 4 and 64 millimetres. |
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3753 | pecked line | In CARTOGRAPHY, a SYMBOL consisting of a line broken at regular intervals. |
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3754 | pedometer | A pocket-size instrument which registers in linear units the distance traversed by the pedestrian carrying it. See PASSOMETER. |
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3755 | pelagic-abyssal sediments | Deep sea SEDIMENTS that are free of terrestrial material except for a small proportion of very fine CLAY. |
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3756 | pelagic division | In the classification of the marine environment and its inhabitants, a primary division of the SEA which includes the whole mass of water. T... more |
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3757 | pelorus | A COMPASS CARD in the form of a metal plate mounted in GIMBALS to maintain a horizontal position and fitted with SIGHT-VANES for observing B... more |
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3758 | pencil | In optics, a set of RAYS coming to or spreading out from a point. See LIGHT PENCIL. |
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3759 | pencil beam | A BEAM in which the RADIANT ENERGY is concentrated in an approximately conical or cylindrical portion of space of relatively small diameter... more |
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3760 | pendulum | A body so suspended from a fixed point as to swing freely to and from under the combined forces of GRAVITY and MOMENTUM. A vertical bar so ... more |