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Eng ID | Term | Definition |
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4761 | signal | As applied to electronics, any transmitted electrical IMPULSE. That which conveys intelligence in any form of communication, such as a TIM... more |
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4762 | signal: eccentric | See ECCENTRIC SIGNAL. |
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4763 | signal: fog | See FOG SIGNAL. |
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4764 | signal: hydrographic | Any object, existing or specially erected, for the CONTROL of HYDROGRAPHIC SURVEY. See also SOUNDING MARK. |
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4765 | signal: longitude | A sign indicating a time event, observable at different stations, and used in comparing LOCAL TIMES of those stations, and determining the... more |
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4766 | signal: luminous | In SURVEYING, a SIGNAL consisting of HELIOTROPE or HELIOSTAT by day, and SELENOTROPE or SIGNAL LAMP by night. |
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4767 | signal: sound | See SOUND SIGNAL. |
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4768 | signal: survey | A natural or artificial object or structure whose horizontal and sometimes vertical POSITION is obtained by surveying methods. Survey signa... more |
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4769 | signal: tidal current | A SIGNAL or message conveying information on condition of TIDAL CURRENT in the area in question. |
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4770 | signal: tide | A SIGNAL or message conveying information on tidal conditions in the area in question. |
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4771 | signal: time | An accurate SIGNAL marking a specified TIME or time interval. It is used primarily for determining ERRORS of TIMEPIECES. Such SIGNALS are ... more |
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4772 | signal: topographic | Any object, existing or specially erected, used for the CONTROL of TOPOGRAPHIC SURVEY. |
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4773 | signal: triangulation | A rigid structure erected close or over a TRIANGULATION STATION. Also any object, natural or artificial, whose POSITION is obtained in a tri... more |
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4774 | signal: tripod | A three-legged TRIANGULATION SIGNAL. It is usually constructed in such a manner that an observer can set up his THEODOLITE and make OBSERVA... more |
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4775 | signal: water | A HYDROGRAPHIC SIGNAL erected in SHALLOW WATER. |
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4776 | signal: weather | A visual SIGNAL displayed to indicate a WEATHER FORECAST. |
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4777 | signal lamp | See LAMP. |
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4778 | signal station | A place on SHORE from which SIGNALS are made to ships at sea. |
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4779 | signi | Abbreviation for Signalisation de Navigation Intérieure. A system of buoyage used in certain inland waters in the Netherlands. |
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4780 | sill | A SEAFLOOR barrier of relatively shallow DEPTH restricting water movement between BASINS. |