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In the Middle Ages, multidirectional signs at intersections became common, giving directions to cities and towns. In 1686, the first known Traffic Regulation Act in Europe was established by King Peter II of Portugal. This act foresaw the placement of priority signs in the narrowest streets of Lisbon, stating which traffic should back up to ...
When electricity flows (with direction given by conventional current) in a long straight wire, it creates a cylindrical magnetic field around the wire according to the right-hand rule. The conventional direction of a magnetic line is given by a compass needle. Electromagnet: The magnetic field around a wire is relatively weak. If the wire is ...
A direction sign, more fully defined as a direction, position, or indication sign by the Vienna Convention on Road Signs and Signals, is any road sign used primarily to give information about the location of either the driver or possible destinations, and are considered a subset of the informative signs group. Direction signs are far more ...
Photo essays range from purely photographic works to photographs with captions or small notes to full-text essays with a few or many accompanying photographs. Photo essays can be sequential in nature, intended to be viewed in a particular order—or they may consist of non-ordered photographs viewed all at once or in an order that the viewer ...
Instructional scaffolding is the support given to a student by an instructor throughout the learning process. This support is specifically tailored to each student; this instructional approach allows students to experience student-centered learning, which tends to facilitate more efficient learning than teacher-centered learning.
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Vital articles. The five nested vital article Levels are meant to give direction to the prioritization of improvements of English Wikipedia articles (e.g. which articles to bring to WP:GA and WP:FA status), to provide a measurement of quality of overall English Wikipedia (e.g. what proportion of the most important articles are at GA and FA status), and to serve as a centralized watchlist of ...
Direction determination refers to the ways in which a cardinal direction or compass point can be determined in navigation and wayfinding.The most direct method is using a compass (magnetic compass or gyrocompass), but indirect methods exist, based on the Sun path (unaided or by using a watch or sundial), the stars, and satellite navigation.