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41Doubling the cube — (also known as the Delian problem) is one of the three most famous geometric problems unsolvable by compass and straightedge construction. It was known to the Egyptians, Greeks, and Indians.[1] To double the cube means to be given a cube of some… …
42List of Greeks — This is a list of Greek people. Actors/actressesAncient period*Metrobius *ThespisModern period*Alekos Alexandrakis *Criss Angel *Jennifer Aniston *Yannis Bezos *Michael Chiklis *Cybele *Georges Corraface *Jacques Damala *Rika Diallina *Lavrentis… …
43Fire apparatus — A fire apparatus, fire engine, fire truck, or fire appliance is a vehicle designed to assist in fighting fires, by transporting firefighters to the scene, and providing them with access, water or other equipment. In some areas, the terms fire… …
44Almagest — Geometric construction used by Hipparchus in his determination of the distances to the sun and moon. The Almagest is a 2nd century mathematical and astronomical treatise on the apparent motions of the stars and planetary paths. Written in Greek… …
45Pipe organ — This article is about organs that produce sound by driving wind through pipes. For an overview of related instruments, see Organ (music). The pipe organ in Saint Germain l Auxerrois, Paris[1] The pipe organ is a musical instrument …
46Organ (music) — Organ 1741 Pipe organ in Église Saint Thomas, Strasbourg, France. Classification Keyboard instrument (Aerophone) Playing r …
47Lost work — A lost work is a document or literary work produced some time in the past of which no surviving copies are known to exist. Works may be lost to history either through the destruction of the original manuscript, or through the non survival of any… …
48List of Egyptians — The following is a list of notable Egyptians: Contents 1 Film, television, and radio 1.1 Actors 1.2 Actresses 1.3 Female models …
49Squaring the circle — Squaring the circle: the areas of this square and this circle are equal. In 1882, it was proven that this figure cannot be constructed in a finite number of steps with an idealized compass and straightedge …
50Apollonius of Perga — Apollonius of Perga. Apollonius of Perga [Pergaeus] (Ancient Greek: Ἀπολλώνιος) (ca. 262 BC – ca. 190 BC) was a Greek geometer and astronomer noted for his writings on conic sections. His innovative methodology and terminology, especially in the… …
