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Columnar jointing. Columnar jointing is a geological structure where sets of intersecting closely spaced fractures, referred to as joints, result in the formation of a regular array of polygonal prisms (basalt prisms), or columns. Columnar jointing occurs in many types of igneous rocks and forms as the rock cools and contracts.
Exophoria is a form of heterophoria in which there is a tendency of the eyes to deviate outward. [1] During examination, when the eyes are dissociated, the visual axes will appear to diverge away from one another.
Prism (geometry) In geometry, a prism is a polyhedron comprising an n-sided polygon base, a second base which is a translated copy (rigidly moved without rotation) of the first, and n other faces, necessarily all parallelograms, joining corresponding sides of the two bases. All cross-sections parallel to the bases are translations of the bases.
Dry stone, sometimes called drystack or, in Scotland, drystane, is a building method by which structures are constructed from stones without any mortar to bind them together. [1] A certain amount of binding is obtained through the use of carefully selected interlocking stones. Dry stone construction is best known in the context of stone walls ...
The Maddox rod test can be used to subjectively detect and measure a latent, manifest, horizontal or vertical strabismus for near and distance. The test is based on the principle of diplopic projection. [1] Dissociation of the deviation is brought about by presenting a red line image to one eye and a white light to the other, while prisms are ...
A menhir (/ ˈmɛnhɪər /; [1] from Brittonic languages: maen or men, "stone" and hir or hîr, "long" [2]), standing stone, orthostat, or lith is a large upright stone, emplaced in the ground by humans, typically dating from the European middle Bronze Age.
The Romanesque Church of Santa Maria Maggiore at Tuscania, Italy, has a recessed entrance flanked by a pair of free-standing stone columns intended to evoke Boaz and Jachin. [ 7 ] Similar pillars intended to represent Boaz and Jachin also exist in Würzburg Cathedral (Germany) and Dalby Church (Sweden). [ 8 ]
Rudston Monolith. The Rudston Monolith at over 25 feet (7.6 m) is the tallest megalith (standing stone) in the United Kingdom. It is situated in the churchyard in the village of Rudston (grid reference TA098678) in the East Riding of Yorkshire.