Rectilinear — may refer to:* Rectilinear grid, a tessellation of the Euclidean plane * Rectilinear lens, a photographic lens * Rectilinear locomotion, a form of animal locomotion * Rectilinear polygon, a polygon whose edges meet at right angles * Rectilinear… … Wikipedia
Huygens–Fresnel principle — Wave refraction in the manner of Huygens … Wikipedia
Wave — A wave is a disturbance that propagates through space and time, usually with transference of energy. While a mechanical wave exists in a medium (which on deformation is capable of producing elastic restoring forces), waves of electromagnetic… … Wikipedia
rectilineal — adjective characterized by a straight line or lines rectilinear patterns in wallpaper the rectilinear propagation of light • Syn: ↑rectilinear • Similar to: ↑linear, ↑one dimensional … Useful english dictionary
Timeline of electromagnetism and classical optics — Timeline of electromagnetism and classical optics* 130 mdash; Claudius Ptolemy tabulates angles of refraction for several media * 1021 mdash; Ibn al Haytham (Alhazen) writes the Book of Optics , studying lenses, the psychology of vision, the… … Wikipedia
11th century — As a means of recording the passage of time, the 11th century is the period from 1001 to 1100 in accordance with the Julian calendar in the Christian/Common Era. In the history of European culture, this period is considered the early part of the… … Wikipedia
Effective Earth radius — In telecommunication, effective Earth radius is the radius of a hypothetical Earth for which the distance to the radio horizon, assuming rectilinear propagation, is the same as that for the actual Earth with an assumed uniform vertical gradient… … Wikipedia
François Arago — 25th Prime Minister of France In office 9 May 1848 – 24 June 1848 Preceded by Jacques Charles Dup … Wikipedia
List of discoveries — This article presents a list of discoveries and includes famous observation. Discovery observations form acts of detecting and learning something. Discovery observations are acts in which something is found and given a productive insight. The… … Wikipedia
1604 in science — The year 1604 in science and technology involved some significant events.Astronomy* Supernova 1604, also known as Kepler s Supernova, is observed. As of 2006, this was the last supernova to be observed in the Milky Way.Exploration* France begins… … Wikipedia