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Eng ID | Term | Definition |
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2401 | ice rise | A mass of ICE resting on ROCK and surrounded either by an ICE SHELF or partly by an ICE SHELF and partly by SEA. No ROCK is exposed and th... more |
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2402 | ice sheet | A continuous mass of ICE and SNOW of considerable thickness and large area. Ice sheets may be resting on ROCK (see INLAND ICE SHEET) or floa... more |
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2403 | ice shelf | A floating ICE SHEET of considerable thickness. Ice shelves are usually of great horizontal extent and have a level or gently undulating s... more |
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2404 | ice storm | Intense formation of ICE on objects by the freezing, on impact, of drops of RAIN or DRIZZLE. |
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2405 | ice wall | An ice cliff forming the seaward margin of an INLAND ICE SHEET, ICE PIEDMONT or ICE RISE. The rock basement may be at or below SEA LEVEL. Se... more |
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2406 | identification beacon | See BEACON. |
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2407 | IEC | International Electrotechnical Commission |
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2408 | igneous rock | ROCK formed by solidification of molten material or MAGMA. |
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2409 | illuminated contours | An application of ILLUMINATED RELIEF in which CONTOURS appear lighter on illuminated SLOPES and darker on the shadow SLOPES. |
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2410 | illuminated relief | The representation of RELIEF with the appearance of lighting from one or more directions, giving a three-dimensional impression. Also called... more |
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2411 | illumination (at a point of a surface) | Quotient of the LUMINOUS FLUX incident on an infinitesimal element of the surface containing the point under consideration, by the area ... more |
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2412 | image | The optical counterpart of an object. |
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2413 | image: erect | An IMAGE that appears upright or in the same relative position as the object. |
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2414 | image: inverted | An IMAGE that appears upside down in relation to the object. |
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2415 | image: real | An IMAGE actually produced and capable of being shown on a surface, as in a CAMERA. |
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2416 | image: virtual | An IMAGE that cannot be shown on a surface but is visible, as in a MIRROR. |
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2417 | image point | In PHOTOGRAMMETRY, the IMAGE on a PHOTOGRAPH corresponding to a definite object on the GROUND. |
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2418 | imagery | Techniques to obtain, process or interpret images created by different types of radiation, e.g. light, infrared, x-rays. |
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2419 | impedance | The total opposition offered to an alternating current. It may consist of any combination of resistance, inductive reactance, or capacitiv... more |
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2420 | impersonal micrometer | See MICROMETER: TRANSIT. |