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Flag Of Portugal
The national flag of the Portugal, Portuguese Republic, often referred to as the Portuguese flag consists of a rectangular bicolour with a field divided into green on the Flag terminology#Description of standard flag parts and terms, hoist, and red on the Flag terminology#Description of standard flag parts and terms, fly. The version without laurels of the Coat of arms of Portugal, country’s national coat of arms stands in the middle of the armillary sphere, Portuguese armillary sphere and shield, centered over the colour boundary at equal distance. The flag was announced in First Portuguese Republic, 1910, following the 5 October 1910 revolution, inspired by the colours of the Portuguese Republican Party, Republican Party and the design of radical conspiratorial society Carbonária. Its presentation was done on 1 December 1910, after the downfall of the History of Portugal (1834-1910), constitutional monarchy on 5 October 1910. However, it was only on 30 June 1911, that the of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green
Green is the color between cyan and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495570 nm. In subtractive color systems, used in painting and color printing, it is created by a combination of yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy. Many creatures have adapted to their green environments by taking on a green hue themselves as camouflage. Several minerals have a green color, including the emerald, which is colored green by its chromium content. During post-classical and early modern Europe, green was the color commonly associated with wealth, merchants, bankers, and the gentry, whil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
31 January 1891 Revolt
The 31 January 1891 revolt was the first attempt by republicans to overthrow the Kingdom of Portugal, monarchy in Portugal. The revolt took place in the form of a military uprising in the country's second city of Porto. The causes The immediate cause of the revolt was the 1890 British Ultimatum, also known as Lord Salisbury's Ultimatum, which was delivered to Portugal on 11 January 1890. Portugal had attempted to claim a large area of land in southern Africa between its colonies of Portuguese Mozambique, Mozambique and Portuguese Angola, Angola, which had been included in Portugal's Pink Map prepared in 1885 to show the country's sovereignty over that land. The Ultimatum demanded the withdrawal of Portuguese forces from areas claimed by Portugal based on Portuguese exploration, as Britain claimed these on the basis of possession. The seeming ease by which the Portuguese government gave in to British demands was seen as a national humiliation by most people in Portugal, including r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropic (other)
The term tropic refers to the tropics, a region of the Earth surrounding the Equator. Tropic or Tropics may also refer to: Places and geography * Tropic of Cancer * Tropic of Capricorn * Tropic, Florida, a town in the United States * Tropic, Utah, a town in the United States Sports * Miami Tropics (American football), a professional football team * Miami Tropics, a team in the Premier Basketball League * TSV Oberhaching Tropics, a German basketball team * West Palm Beach Tropics The West Palm Beach Tropics were one of the eight original franchises that began play in the Senior Professional Baseball Association in 1989. The club hired Dick Williams as manager and fielded a lineup that included slugger Dave Kingman and ..., Senior Professional Baseball Association Other uses * SS ''Tropic'' (1871) * SS ''Tropic'' (1904), see List of White Star Line ships * ''Tropic'' (Josep Renau), a 1945 painting by Spanish artist Josep Renau * ''Tropic'' (magazine), a Sunday mag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circle Of Latitude
A circle of latitude or line of latitude on Earth is an abstract east–west small circle connecting all locations around Earth (ignoring elevation) at a given latitude coordinate line. Circles of latitude are often called parallels because they are Parallel (geometry), parallel to each other; that is, planes that contain any of these circles never Intersection, intersect each other. A location's position along a circle of latitude is given by its longitude. Circles of latitude are unlike circles of longitude, which are all great circles with the centre of Earth in the middle, as the circles of latitude get smaller as the distance from the Equator increases. Their length can be calculated by a common sine or cosine function. For example, the 60th parallel north or 60th parallel south, south is half as long as the Equator (disregarding Earth's minor flattening by 0.335%), stemming from \cos(60^) = 0.5. On the Mercator projection or on the Gall-Peters projection, a circle of la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meridian (geography)
In geography and geodesy, a meridian is the locus connecting points of equal longitude, which is the angle (in degrees or other units) east or west of a given prime meridian (currently, the IERS Reference Meridian). In other words, it is a coordinate line for longitudes, a line of longitude. The position of a point along the meridian at a given longitude is given by its latitude, measured in angular degrees north or south of the Equator. On a Mercator projection or on a Gall-Peters projection, each meridian is perpendicular to all circles of latitude. Assuming a spherical Earth, a meridian is a great semicircle on Earth's surface. Adopting instead a spheroidal or ellipsoid model of Earth, the meridian is half of a north-south great ellipse. The length of a meridian is twice the length of an Earth quadrant, equal to on a modern ellipsoid ( WGS 84). Pre-Greenwich The first prime meridian was set by Eratosthenes in 200 BC. This prime meridian was used to provide mea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equator
The equator is the circle of latitude that divides Earth into the Northern Hemisphere, Northern and Southern Hemisphere, Southern Hemispheres of Earth, hemispheres. It is an imaginary line located at 0 degrees latitude, about in circumference, halfway between the North Pole, North and South Pole, South poles. The term can also be used for any other celestial body that is roughly spherical. In three-dimensional space, spatial (3D) geometry, as applied in astronomy, the equator of a rotating spheroid (such as a planet) is the parallel (circle of latitude) at which latitude is defined to be 0°. It is an imaginary line on the spheroid, equidistant from its geographical pole, poles, dividing it into northern and southern hemispheres. In other words, it is the intersection of the spheroid with the plane (geometry), plane perpendicular to its axis of rotation and midway between its geographical poles. On and near the equator (on Earth), noontime sunlight appears almost directly o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecliptic
The ecliptic or ecliptic plane is the orbital plane of Earth's orbit, Earth around the Sun. It was a central concept in a number of ancient sciences, providing the framework for key measurements in astronomy, astrology and calendar-making. From the perspective of an observer on Earth, the Sun's movement around the celestial sphere over the course of a year traces out a path along the ecliptic against the fixed stars, background of stars – specifically the Zodiac constellations. The planets of the Solar System can also be seen along the ecliptic, because their orbital planes are very close to Earth's. The Moon's orbital plane is also similar to Earth's; the ecliptic is so named because the ancients noted that eclipses only occur when the Moon is crossing it. The ecliptic is an important Plane of reference, reference plane and is the basis of the ecliptic coordinate system. Ancient scientists were able to calculate Earth's axial tilt by comparing the ecliptic plane to that of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Small Circle
In spherical geometry, a spherical circle (often shortened to circle) is the locus of points on a sphere at constant spherical distance (the ''spherical radius'') from a given point on the sphere (the ''pole'' or ''spherical center''). It is a curve of constant geodesic curvature relative to the sphere, analogous to a line or circle in the Euclidean plane; the curves analogous to straight lines are called ''great circles'', and the curves analogous to planar circles are called small circles or lesser circles. If the sphere is embedded in three-dimensional Euclidean space, its circles are the intersections of the sphere with planes, and the great circles are intersections with planes passing through the center of the sphere. Fundamental concepts Intrinsic characterization A spherical circle with zero geodesic curvature is called a ''great circle'', and is a geodesic analogous to a straight line in the plane. A great circle separates the sphere into two equal '' hem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Circle
In mathematics, a great circle or orthodrome is the circular intersection of a sphere and a plane passing through the sphere's center point. Discussion Any arc of a great circle is a geodesic of the sphere, so that great circles in spherical geometry are the natural analog of straight lines in Euclidean space. For any pair of distinct non- antipodal points on the sphere, there is a unique great circle passing through both. (Every great circle through any point also passes through its antipodal point, so there are infinitely many great circles through two antipodal points.) The shorter of the two great-circle arcs between two distinct points on the sphere is called the ''minor arc'', and is the shortest surface-path between them. Its arc length is the great-circle distance between the points (the intrinsic distance on a sphere), and is proportional to the measure of the central angle formed by the two points and the center of the sphere. A great circle is the largest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurel Wreath
A laurel wreath is a symbol of triumph, a wreath (attire), wreath made of connected branches and leaves of the bay laurel (), an aromatic broadleaf evergreen. It was also later made from spineless butcher's broom (''Ruscus hypoglossum'') or cherry laurel (''Prunus laurocerasus''). It is worn as a Chaplet (headgear), chaplet around the head, or as a garland around the neck. Wreaths and crowns in antiquity, including the laurel wreath, trace back to Ancient Greek culture, Ancient Greece. In Greek mythology, the god Apollo, who is patron of lyrical poetry, musical performance and skill-based athletics, is conventionally depicted wearing a laurel wreath on his head in all three roles. Wreaths were awarded to victors in athletic competitions, including the ancient Ancient Olympic Games, Olympics; for victors in athletics they were made of wild olive tree known as ''"kotinos"'' (), (sc. at Olympia, Greece, Olympia) – and the same for winners of musical and poetic competitions. In a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspect Ratio
The aspect ratio of a geometry, geometric shape is the ratio of its sizes in different dimensions. For example, the aspect ratio of a rectangle is the ratio of its longer side to its shorter side—the ratio of width to height, when the rectangle is oriented as a "landscape format, landscape". The aspect ratio is most often expressed as two integer numbers separated by a colon (x:y), less commonly as a simple or decimal Fraction (mathematics), fraction. The values x and y do not represent actual widths and heights but, rather, the proportion between width and height. As an example, 8:5, 16:10, 1.6:1, and 1.6 are all ways of representing the same aspect ratio. In objects of more than two dimensions, such as hyperrectangles, the aspect ratio can still be defined as the ratio of the longest side to the shortest side. Applications and uses The term is most commonly used with reference to: * Graphic / image ** Aspect ratio (image), Image aspect ratio ** Display aspect ratio ** Pape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flag Of Portugal Blank Measures
A flag is a piece of fabric (most often rectangular) with distinctive colours and design. It is used as a symbol, a signalling device, or for decoration. The term ''flag'' is also used to refer to the graphic design employed, and flags have evolved into a general tool for rudimentary signalling and identification, especially in environments where communication is challenging (such as the maritime environment, where semaphore is used). Many flags fall into groups of similar designs called flag families. The study of flags is known as "vexillology" from the Latin , meaning "flag" or "banner". National flags are patriotic symbols with widely varied interpretations that often include strong military associations because of their original and ongoing use for that purpose. Flags are also used in messaging, advertising, or for decorative purposes. Some military units are called "flags" after their use of flags. A ''flag'' (Arabic: ) is equivalent to a brigade in Arab countries. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
