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Eng ID | Term | Definition |
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4661 | semidiurnal tide | See TIDE. |
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4662 | semi-enclosed sea | See ENCLOSED SEA. |
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4663 | semimajor axis | One-half of the longest diameter of an ellipse. |
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4664 | semiminor axis | One-half of the shortest diameter of an ellipse. |
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4665 | send | See SCEND. |
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4666 | sensibility of magnetic compass | The ability of a magnetic compass card to align itself with the MAGNETIC MERIDIAN after deflection. |
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4667 | sensibility (or sensitivity) of spirit level | The ACCURACY and PRECISION which a SPIRIT LEVEL is capable of producing. Sensibility depends on the radius of curvature of its longitudinal ... more |
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4668 | sensible horizon | See HORIZON. |
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4669 | sensitive bubble | See LEVEL: SPIRIT. |
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4670 | sensitivity of electronic equipment | The ability of electronic equipment to amplify a SIGNAL, measured by the minimum strength of signal INPUT capable of causing a desired valu... more |
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4671 | sensitivity of spirit level | See SENSIBILITY OF SPIRIT LEVEL. |
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4672 | separation effect | In ECHO SOUNDING instruments with separate transmitting and receiving units, the effect caused by such separation. This introduces an ERROR ... more |
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4673 | separation line | See SEPARATION ZONE. |
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4674 | separation zone or line | A zone or line separating the traffic LANES in which ships are proceeding in opposite, or nearly opposite directions; or separating a traffi... more |
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4675 | sequence of current | The order of occurrence of the TIDAL CURRENT strengths of a day, with special reference to whether the greater FLOOD immediately precedes ... more |
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4676 | sequence of tide | The order in which the TIDES of a day occur, with special reference to whether the HIGHER HIGH WATER immediately precedes or follows the LOW... more |
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4677 | serial temperatures | The OBSERVATIONS required to determine the vertical distribution of temperature and SALINITY with DEPTH at any one place in the OCEAN. |
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4678 | set | The direction toward which a CURRENT flows. |
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4679 | set | (v.i.). Of a CELESTIAL BODY, to cross the APPARENT HORIZON while descending. The opposite is RISE. To establish, as to set a COURSE. |
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4680 | set of observations | A set of two or more OBSERVATIONS at different settings of the apparatus made in order to eliminate certain ERRORS which, for the apparatus ... more |