AstrolabeAn astrolabe (ἀστρολάβος astrolábos; ٱلأَسْطُرلاب al-Asṭurlāb; ستارهیاب Setāreyāb) is an astronomical instrument dating back to ancient times. It serves as a star chart and physical model of visible heavenly bodies. Its various functions also make it an elaborate inclinometer and an analog calculation device capable of working out several kinds of problems in astronomy. In its simplest form it is a metal disc with a pattern of wires, cutouts, and perforations that allows a user to calculate astronomical positions precisely.
SectA sect is a subgroup of a religious, political, or philosophical belief system, usually an offshoot of a larger group. Although the term was originally a classification for religious separated groups, it can now refer to any organization that breaks away from a larger one to follow a different set of rules and principles. Sects are usually created due to perception of heresy by the subgroup and/or the larger group. In an Indian context, sect refers to an organized tradition.
Ancient historyAncient history is a time period from the beginning of writing and recorded human history to as far as late antiquity. The span of recorded history is roughly 5,000 years, beginning with the Sumerian cuneiform script. Ancient history covers all continents inhabited by humans in the period 3000 BC - AD 500. The three-age system periodizes ancient history into the Stone Age, the Bronze Age, and the Iron Age, with recorded history generally considered to begin with the Bronze Age.
Almoravid dynastyThe Almoravid dynasty (المرابطون) was an imperial Berber Muslim dynasty centered in the territory of present-day Morocco. It established an empire in the 11th century that stretched over the western Maghreb and Al-Andalus, starting in the 1050s and lasting until its fall to the Almohads in 1147. The dynasty emerged from a coalition of the Lamtuna, Gudala, and Massufa, nomadic Berber tribes living in what is now Mauritania and the Western Sahara, traversing the territory between the Draa, the Niger, and the Senegal rivers.
OthelloOthello (full title: The Tragedy of Othello, the Moor of Venice) is a tragedy written by William Shakespeare, probably in 1603. The story revolves around two characters, Othello and Iago. Othello is a Moorish military commander who was serving as a general of the Venetian army in defence of Cyprus against invasion by Ottoman Turks. He has recently married Desdemona, a beautiful and wealthy Venetian lady younger than himself, without the knowledge of and despite the later objection of her father.
Black DeathThe Black Death (also known as the Pestilence, the Great Mortality or the Plague) was a bubonic plague pandemic occurring in Western Eurasia and North Africa from 1346 to 1353. It is the most fatal pandemic recorded in human history, causing the deaths of 75–200 million people, peaking in Europe from 1347 to 1351. Bubonic plague is caused by the bacterium Yersinia pestis spread by fleas, but during the Black Death it probably also took a secondary form, spread by person-to-person contact via aerosols, causing pneumonic plague.
WorldIn its most general sense, the term "world" refers to the totality of entities, to the whole of reality or to everything that is. The nature of the world has been conceptualized differently in different fields. Some conceptions see the world as unique while others talk of a "plurality of worlds". Some treat the world as one simple object while others analyze the world as a complex made up of many parts. In scientific cosmology the world or universe is commonly defined as "[t]he totality of all space and time; all that is, has been, and will be".
United Nations High Commissioner for RefugeesThe United Nations High Commissioner for Refugees (UNHCR) is a United Nations agency mandated to aid and protect refugees, forcibly displaced communities, and stateless people, and to assist in their voluntary repatriation, local integration or resettlement to a third country. It is headquartered in Geneva, Switzerland, with over 18,879 staff working in 138 countries. UNHCR was created in 1950 to address the refugee crisis that resulted from World War II.
Mehmed IIMehmed II (محمد ثانى; II. Mehmed, icinˈdʒi ˈmehmed; 30 March 1432 - 3 May 1481), commonly known as Mehmed the Conqueror (Ebū'l-fetḥ; Fâtih Sultan Mehmed), was an Ottoman sultan who ruled from August 1444 to September 1446 and then later from February 1451 to May 1481. In Mehmed II's first reign, he defeated the crusade led by John Hunyadi after the Hungarian incursions into his country broke the conditions of the truce per the Treaties of Edirne and Szeged.
Armillary sphereAn armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of objects in the sky (on the celestial sphere), consisting of a spherical framework of rings, centered on Earth or the Sun, that represent lines of celestial longitude and latitude and other astronomically important features, such as the ecliptic. As such, it differs from a celestial globe, which is a smooth sphere whose principal purpose is to map the constellations.