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Ground Penetrating Radar |
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Ground-penetrating radar is a geophysical technique that sends electromagnetic pulses into the ground and records the pattern of their reflection. A radar antenna is towed along the ground surface and radar waves are sent into the ground. As they reflect off any archaeological buried features some of the waves are reflected back to the surface and are measured by another receiving antenna. The radar travel times are measured and stored on a computer. The readings can then be plotted to create a three dimensional picture of the features below the ground. See also geophysical survey. |
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PENCIL SHARPENING STONE * |
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A stone, usually found in a schoolyard, either built into a wall or forming part of a free standing structure, on which pencils can be sharpened. Although increasingly rare examples do survive. |
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PENTECOSTALIST CHURCH * |
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A place of worship for followers of the Pentecost (ie. emphasising the gifts of the Holy Spirit). |
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PENITENCE MAZE * |
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A maze used for the act of penitence. |
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DISPERSAL PEN * |
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An area of hardstanding, surrounded on three sides by a protective wall or bank, used for parking aircraft, in a state of readiness, usually around the perimeter of an airfield. |
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PENTAD HANGAR * |
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An all-steel end-opening, hangar with canted sides designed for folded-wing aircraft. |
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PENGUIN POOL * |
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A pool of water, and ancillary buildings, designed to accommodate penguins. |
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PENITENTIARY * |
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An institution for convicted prisoners held under a regime which strove to reform by means of silent isolation and labour. |
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FIGHTER PEN * |
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A turf-covered mound in a curvilinear E-shape, and hard-standing to take an aircraft. There were usually an access point to an air raid shelter at the rear. In use during WW2 |
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LAMBING PEN * |
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An enclosure where ewes are kept at the time of lambing. |
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PEN FACTORY * |
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A building or buildings used for the production of pens. |
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PENCIL MILL * |
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A factory where pencils are manufactured. |
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CATTLE PEN * |
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An enclosure for cattle. |
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BLAST PEN * |
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A protective structure, often made of sandbags with reinforcement, designed to protect aircraft at airfields from enemy attack. |
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GOOSE PEN * |
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An enclosure or pen for confining geese. |
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BOAR PEN * |
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A pen to separate the boar from the other pigs. |
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BULL PEN * |
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An enclosure for the containment of a bull. |
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PEN POND * |
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A pond storing water to supply a HAMMER POND. |
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PENSTOCK * |
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A pipe, usually of reinforced concrete or metal, which delivers pressurized water from a dam to hydraulic turbines. |
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RAMS PEN * |
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Cubicles for housing rams, resembling pigsties with their own yard but slightly larger. |
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PEN * |
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A small enclosure for cattle, sheep, swine, poultry, etc. Use more specific type where known. |
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