archimedes' spiral
111Anthropology and Archaeology — ▪ 2009 Introduction Anthropology Among the key developments in 2008 in the field of physical anthropology was the discovery by a large interdisciplinary team of Spanish and American scientists in northern Spain of a partial mandible (lower… …
112Mercadian Masques — ← Urza s Destiny Battle Royale → Mercadian Masques a Mask Released …
113Espiral de Arquímedes — Saltar a navegación, búsqueda La espiral de Arquímedes (también espiral aritmética), obtuvo su nombre del matemático siciliano Arquímedes, quien vivió en el siglo III antes de Cristo. Se define como el lugar geométrico de un punto moviéndose a… …
114Angle trisection — The problem of trisecting the angle is a classic problem of compass and straightedge constructions of ancient Greek mathematics.Two tools are allowed # An un marked straightedge, and # a compass, Problem: construct an angle one third a given… …
115Archimedeanscrew — Archimedean screw Precision Graphics n. An ancient apparatus for raising water, consisting of either a spiral tube around an inclined axis or an inclined tube containing a tight fitting, broad threaded screw. Also called Archimedes screw. … …
116Hellenistic Age — In the eastern Mediterranean and the Middle East, the period between the death of Alexander the Great (323 BC) and the conquest of Egypt by Rome (30 BC). Alexander and his successors established Greek monarchies that controlled the area from… …
117Egypt, ancient — Introduction civilization in northeastern Africa dating from the 3rd millennium BC. Its many achievements, preserved in its art and monuments, hold a fascination that continues to grow as archaeological finds expose its secrets. This article… …
118Conon of Samos — (fl. 245 bc) Greek mathematician and astronomer Conon settled in Alexandria and was employed as court astronomer to the Egyptian monarch Ptolemy III. None of Conon s own writings survive and what is known of his work is through secondhand… …
119Arc length — Determining the length of an irregular arc segment is also called rectification of a curve. Historically, many methods were used for specific curves. The advent of infinitesimal calculus led to a general formula that provides closed form… …
120Screw conveyor — Screw conveyors have been a popular material handling mechanism throughout history. They are used in many bulk handling industries. Although inclined screw conveyors can function as an Archimedes screw, many bulk systems have chutes guiding… …
