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Natanz Granite
Natanz ( fa, نطنز, also romanized as Naţanz) is a city and capital of Natanz County, Isfahan Province, Iran. At the 2006 census, its population was 12,060, in 3,411 families. It is located south-east of Kashan. Its bracing climate and locally produced fruit are well known in Iran. Its pear fruits are well known. Bamford, James. "The Secret War." ''Wired''. June 12, 2013.2 Retrieved on June 14, 2013. The Karkas mountain chain (Kuh-e Karkas) (meaning ''mountain of vultures''), at an elevation of 3,899 meters, rises above the town. Various small shrines dot the area, and it is known as the shrine of Abd as-Samad. The elements in the present complex date from 1304 with subsequent additions and restorations, such as the Khaneqah and Muqarnas vault. The tomb honors the Sufi ''Sheikh Abd al-Samad'', and was built by the Sheikh's disciple, the Ilkhanid vizier ''Zain al-Din Mastari''. Nuclear facility Natanz nuclear facility is part of Iran’s nuclear program. It is located ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abdas-Samad Esfahani
Sheikh Abdussamad Esfahani, ( fa, شیخ عبدالصمد اصفهانی), also spelled Abdul Samad, 'Abd al-Samad, or Abd-ul-Samad, was a famous Ilkhanid era Shi'ite Sufi of the 13th century. After Abdussamad's death in 1299 CE, his disciple, the Ilkhanid vizier Zayn al-Din Mastaria, built a in Natanz in his honor. The congregational (Jameh) mosque of Natanz was built around the tomb. Further reading * External linksArchnet entry [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darius III
Darius III ( peo, 𐎭𐎠𐎼𐎹𐎺𐎢𐏁 ; grc-gre, Δαρεῖος ; c. 380 – 330 BC) was the last Achaemenid King of Kings of Persia, reigning from 336 BC to his death in 330 BC. Contrary to his predecessor Artaxerxes IV Arses, Darius was a distant member of the Achaemenid dynasty. During his early career, he was reportedly an obscure figure among his peers and first rose to prominence during the Cadusian expedition of Artaxerxes III in the 350s BC. As a reward for his bravery, he was given the Satrapy of Armenia. Around 340 BC, he was placed in charge of the royal "postal service," a high-ranking position. In 338 BC, Artaxerxes III met an abrupt end after being poisoned by the court eunuch and chiliarch (''hazahrapatish'') Bagoas, who installed his youngest son Arses on the throne. He only reigned for a few years, until Bagoas had him poisoned as well. Darius was subsequently installed on the throne and soon forced Bagoas to drink his poison after discovering that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas Centrifuge
A gas centrifuge is a device that performs isotope separation of gases. A centrifuge relies on the principles of centrifugal force accelerating molecules so that particles of different masses are physically separated in a gradient along the radius of a rotating container. A prominent use of gas centrifuges is for the separation of uranium-235 (235U) from uranium-238 (238U). The gas centrifuge was developed to replace the gaseous diffusion method of uranium-235 extraction. High degrees of separation of these isotopes relies on using many individual centrifuges arranged in series, that achieve successively higher concentrations. This process yields higher concentrations of uranium-235 while using significantly less energy compared to the gaseous diffusion process. Centrifugal process The centrifuge relies on the force resulting from centrifugal acceleration to separate molecules according to their mass, and can be applied to most fluids. The dense (heavier) molecules move towards th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Enrichment
Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235U) has been increased through the process of isotope separation. Naturally occurring uranium is composed of three major isotopes: uranium-238 (238U with 99.2739–99.2752% natural abundance), uranium-235 (235U, 0.7198–0.7202%), and uranium-234 (234U, 0.0050–0.0059%). 235U is the only nuclide existing in nature (in any appreciable amount) that is fissile with thermal neutrons. Enriched uranium is a critical component for both civil nuclear power generation and military nuclear weapons. The International Atomic Energy Agency attempts to monitor and control enriched uranium supplies and processes in its efforts to ensure nuclear power generation safety and curb nuclear weapons proliferation. There are about 2,000 tonnes of highly enriched uranium in the world, produced mostly for nuclear power, nuclear weapons, naval propulsion, and smaller quantities for research reactors. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Program Of Iran
The nuclear program of Iran is an ongoing scientific effort by Iran to research nuclear technology that can be used to make nuclear weapons. Iran has several research sites, two uranium mines, a research reactor, and uranium processing facilities that include three known uranium enrichment plants. Iran's nuclear program was launched in the 1950s with the help of the United States under the Atoms for Peace program, and in 1970, Iran ratified the Non-Proliferation Treaty (NPT), limiting its nuclear program to peaceful use, and making its nuclear program subject to inspection by the International Atomic Energy Agency (IAEA). Western cooperation ceased following the 1979 Iranian Revolution, after which Iran continued its nuclear program on a clandestine basis. In the 2000s, the revelation of Iran's clandestine uranium enrichment program raised concerns that the program might be intended for non-peaceful uses. The IAEA launched an investigation in 2003 after an Iranian dissident gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vizier
A vizier (; ar, وزير, wazīr; fa, وزیر, vazīr), or wazir, is a high-ranking political advisor or minister in the near east. The Abbasid caliphs gave the title ''wazir'' to a minister formerly called ''katib'' (secretary), who was at first merely a helper but afterwards became the representative and successor of the ''dapir'' (official scribe or secretary) of the Sassanian kings. In modern usage, the term has been used for government ministers in much of the Middle East and beyond. Several alternative spellings are used in English, such as ''vizir'', ''wazir'', and ''vezir''. Etymology Vizier is suggested to be an Iranian word, from the Pahlavi root of ''vičir'', which originally had the meaning of a ''decree'', ''mandate'', and ''command'', but later as its use in Dinkard also suggests, came to mean ''judge'' or ''magistrate''. Arthur Jeffery considers the word to be a "good Iranian" word, as has a well-established root in Avestan language. The Pahlavi ''viči ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ilkhanid
The Ilkhanate, also spelled Il-khanate ( fa, ایل خانان, ''Ilxānān''), known to the Mongols as ''Hülegü Ulus'' (, ''Qulug-un Ulus''), was a khanate established from the southwestern sector of the Mongol Empire. The Ilkhanid realm, officially known as ''Iranzamin'' (), was ruled by the Mongol House of Hulagu. Hulagu Khan, the son of Tolui and grandson of Genghis Khan, inherited the Middle Eastern part of the Mongol Empire after his brother Möngke Khan died in 1260. Its core territory lies in what is now part of the countries of Iran, Azerbaijan, and Turkey. At its greatest extent, the Ilkhanate also included parts of modern Iraq, Syria, Armenia, Georgia, Afghanistan, Turkmenistan, Pakistan, part of modern Dagestan, and part of modern Tajikistan. Later Ilkhanate rulers, beginning with Ghazan in 1295, converted to Islam. In the 1330s, the Ilkhanate was ravaged by the Black Death. Its last khan Abu Sa'id died in 1335, after which the khanate disintegrated. The I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sufi
Sufism ( ar, ''aṣ-ṣūfiyya''), also known as Tasawwuf ( ''at-taṣawwuf''), is a mystic body of religious practice, found mainly within Sunni Islam but also within Shia Islam, which is characterized by a focus on Islamic spirituality, ritualism, asceticism and esotericism. It has been variously defined as "Islamic mysticism",Martin Lings, ''What is Sufism?'' (Lahore: Suhail Academy, 2005; first imp. 1983, second imp. 1999), p.15 "the mystical expression of Islamic faith", "the inward dimension of Islam", "the phenomenon of mysticism within Islam", the "main manifestation and the most important and central crystallization" of mystical practice in Islam, and "the interiorization and intensification of Islamic faith and practice". Practitioners of Sufism are referred to as "Sufis" (from , ), and historically typically belonged to "orders" known as (pl. ) – congregations formed around a grand who would be the last in a chain of successive teachers linking back to Muha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muqarnas
Muqarnas ( ar, مقرنص; fa, مقرنس), also known in Iranian architecture as Ahoopāy ( fa, آهوپای) and in Iberian architecture as Mocárabe, is a form of ornamented vaulting in Islamic architecture. It is the archetypal form of Islamic architecture, integral to the vernacular of Islamic buildings that originated in the Abbasid Empire. The muqarnas structure originated from the squinch. Sometimes called "honeycomb vaulting" or "stalactite vaulting", the purpose of muqarnas is to create a smooth, decorative zone of transition in an otherwise bare, structural space. This structure gives the ability to distinguish between the main parts of a building, and serve as a transition from the walls of a room into a domed ceiling. Muqarnas is significant in Islamic architecture because its elaborate form is a symbolic representation of universal creation by God. Muqarnas architecture is featured in domes, half-dome entrances, iwans and apses. The two main types of muqarnas a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khaneqah
A khanqah ( fa, خانقاه) or khangah ( fa, خانگاه; also transliterated as ''khankah'', ''khaneqa'', ''khanegah'' or ''khaneqah''; also Arabized ''hanegah'', ''hanikah'', ''hanekah'', ''khankan''), also known as a ribat (), is a building designed specifically for gatherings of a Sufi brotherhood or ''tariqa'' and is a place for spiritual practice and religious education. The khanqah is typically a large structure with a central hall and smaller rooms on either side. Traditionally, the kahnqah was state-sponsored housing for Sufis. Their primary function is to provide them with a space to practice social lives of asceticism. Buildings intended for public services, such as hospitals, kitchens, and lodging, are often attached to them. Khanqahs were funded by Ayyubid sultans in Syria, Zangid sultans in Egypt, and Delhi sultans in India in return for Sufi support of their regimes. Etymology The word khanqah is likely either Turkish or Persian in origin. In the Arab world, e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shrine
A shrine ( la, scrinium "case or chest for books or papers"; Old French: ''escrin'' "box or case") is a sacred or holy sacred space, space dedicated to a specific deity, ancestor worship, ancestor, hero, martyr, saint, Daemon (mythology), daemon, or similar figure of respect, wherein they are veneration, venerated or worshipped. Shrines often contain Cult image, idols, relics, or other such objects associated with the figure being venerated. A shrine at which votive offerings are made is called an altar. Shrines are found in many of the world's religions, including Christianity, Islam, Hinduism, Buddhism, Chinese folk religion, Shinto, indigenous Philippine folk religions, and Germanic paganism, Asatru as well as in secular and non-religious settings such as a war memorial. Shrines can be found in various settings, such as Church (building), churches, temples, cemetery, cemeteries, Conservation of South Asian household shrines, museums, or in the home. However, portable shrine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
