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Eng ID | Term | Definition |
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5541 | tide wave | A long-period wave associated with the TIDE-PRODUCING FORCES of the MOON and SUN; identified with the rising and falling of the TIDE. Also c... more |
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5542 | tideway | A CHANNEL through which a TIDAL CURRENT runs. |
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5543 | tie | A survey connection from a point of known POSITION to a point whose POSITION is desired. A tie is made to determine the POSITION of a supple... more |
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5544 | tie in | (v.i.). See TIE. |
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5545 | tie net | See TRIANGULATION NET. |
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5546 | tie point | Point of closure of a SURVEY either on itself or on another SURVEY. |
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5547 | till | Unstratified glacial DRIFT consisting of CLAY, SAND, GRAVEL, and BOULDERS intermingled in any proportions. Also called boulder clay. |
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5548 | tillite | ROCK formed of consolidated or lithified TILL and generally a record of a glacial EPOCH, older than that of the quarternary. |
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5549 | tilt | The angle which anything makes with the horizontal. In PHOTOGRAMMETRY, the angle at the PERSPECTIVE CENTRE between the photograph perpendic... more |
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5550 | tilt: base | In PHOTOGRAMMETRY, the INCLINATION of the AIR BASE with respect to the horizontal. |
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5551 | tilt: relative | The angular relationship between two overlapping VERTICAL PHOTOGRAPHS with no reference to an established DATUM. |
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5552 | tilting level | See LEVELLING INSTRUMENT: TILTING LEVEL. |
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5553 | time | The measurable aspect of duration. The HOUR of the DAY reckoned by the position of a celestial reference point relative to a reference CELES... more |
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5554 | time: apparent | See TIME: APPARENT SOLAR. |
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5555 | time: apparent solar | TIME measured by the apparent diurnal motion of the (true) SUN. Also called true solar time, and often apparent time. |
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5556 | time: astronomic(al) | SOLAR TIME in a DAY (ASTRONOMICAL DAY) that begins at NOON. |
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5557 | time: civil | SOLAR TIME in a DAY (CIVIL DAY) that begins at MIDNIGHT. |
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5558 | time: daylight saving | A variation of ZONE TIME, usually one HOUR ahead of that TIME. Sometimes called summer time. |
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5559 | time: geologic(al) | The division into a number of great ERAS, each represented by a group of ROCKS. |
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5560 | time: Greenwich | TIME based upon the GREENWICH MERIDIAN as reference. |