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HandWiki is the world's largest wiki-style encyclopedia dedicated to science, technology and computing. It allows you to create and edit articles as long as you have external citations and login account. In addition, this is a content management environment that can be used for collaborative editing of original scholarly content, such as books, manuals, monographs and tutorials.

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Gamma Squeeze
In the stock market, a gamma squeeze occurs when the underlying price of a stock increases within a very short timeframe. A higher amount of money moving into call options results in greater buying activity and can push the stock price up as a result.
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  • 07 Nov 2022
Topic Review
List of Temples in Tamil Nadu
This is a list of temples in the Indian state of Tamil Nadu which is famed for Hindu temples, culture and tradition and commonly known as the Land of Temples. Tamil Nadu has more temples than any other states of India. Tamil Nadu is home to more than 40,000 Hindu, Buddhist, Jain, local deities, Ayyavazhi temples and is aptly called "the land of temples" by media. Many are at least 800 to 5000 years old and are found scattered all over the state. The rulers of various dynasties constructed these temples over centuries. Vimanas (storeys) and Gopuram (towering gateways to the temple complex) best characterize the temples of Tamil Nadu. As per Tamil Nadu Hindu Endowments Board, there are 38,615 temples. Most of the largest Hindu temples reside here. Studded with complex architecture, variety of sculptures, and rich inscriptions, the temples remain the very essence of the culture and heritage of Tamil land, with historical records dating back to at least 3,000 years. In Madurai, Meenakshi Amman Temple has high ‘Gopuram’ towers ornamented with colourful figures. On Pamban Island, Ramanathaswamy Temple is a famous pilgrimage site. The town of Kanyakumari, at India's southernmost tip, is the site of ritual sunrises. The state also abounds with temple tanks. The state has 2,359 temple tanks located in 1,586 temples. The government has identified 1,068 tanks for renovation. People from all over the world visits Temples of Tamil Nadu and it is the major Tourist attraction in India.
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  • 07 Nov 2022
Topic Review
Enchanta
Enchanta /ɛnˈtʃɑːntɑː/ (Enchan /ɛnˈtʃɑːn/ in the 2016 series) is a constructed language spoken by the denizens of Encantadia, known as Encantado(s)/Encantada(s) or Diwata (fairies). It was initially created by Suzette Doctolero for the Philippines fantasy television drama saga Encantadia, which aired on GMA Network in 2005, and was later used in the show's sequels, Etheria: Ang Ikalimang Kaharian ng Encantadia and Encantadia: Pag-ibig Hanggang Wakas. The source material of the language appears to have been derived from Philippine languages (particularly Tagalog) and Romance languages. It has its own script, Enchan, which appears to be based on Baybayin. Three songs in the language are written by Doctolero, namely "Asshenti (Love song)", "Hade!! (Etheria theme song)", and "Ivo (Lireo national anthem)", which are all sung by Bayang Barrios for the sequel Etheria in 2006.
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  • 07 Nov 2022
Topic Review
List of Seaplanes and Amphibious Aircraft
The following is a list of seaplanes and amphibious aircraft, which includes floatplanes and flying boats, by country of origin. Seaplanes are any aircraft that has the capability of landing on water while amphibious aircraft are equipped with wheels to alight on land, as well as being able to land on the water. Flying boats rely on the fuselage or hull for buoyancy, while floatplanes rely on external pontoons or floats. Some experimental aircraft used specially designed skis to skim across the water but did not always have a corresponding ability to float. This list does not include ekranoplans, 'Wing-In-Ground-effect' (WIG), water-skimmers, wingships or similar vehicles reliant on ground effect.
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  • 07 Nov 2022
Topic Review
House of Jamalullail (Perak)
The House of Jamalullail of Perak is one of the oldest Syed (Saiyid) clans in Malaysia. It was established in early 16th century when Syed Husain Al Faradz Jamalullail from Hadramaut arrived in Perak to spread Islam. He flourished as an ulama in the state during the reign of Sultan Muzaffar Shah I (1528 - 1549), the first sultan of Perak. According to R.O. Winstedt in his article titled "The Hadramaut Saiyids of Perak and Siak", Journal of the Straits Branch of the Royal Asiatic Society, No. 79 (September 1918), the Sayid family of Perak exercised great influence on the history of Perak from its founding in the 16th century. The Saiyid family acquired the highest state offices, those of Orang Kaya Besar and of Menteri. One of its members, Syed Abu Bakar bin Syed Jalaluddin was made a Bendahara during the reign of Sultan Muzzafar Shah III (1728-1744). The Jamalullails of Perak held the position of the Orang Kaya Menteri six times in the period from the founding of Perak in 1528 until 1862, reflecting the special position given to them. This hereditary tradition in Perak was interrupted upon the death of menteri Syed Usman in 1862, during the reign of Sultan Jaafar Muazzam Shah (Marhum Waliullah) (1857-1865). According to Buyong Adil, "Sejarah Perak", Dewan Bahasa dan Pustaka, Kuala Lumpur, (2020:156) this change in tradition was a part solution to ending the Larut Wars of 1861-1862.
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  • 07 Nov 2022
Topic Review
Munchausen by Internet
Munchausen by Internet is a pattern of behavior akin to Munchausen syndrome (renamed factitious disorder imposed on self), a psychiatric disorder, wherein those affected feign disease, illness, or psychological trauma to draw attention, sympathy, or reassurance to themselves. In Munchausen by Internet, users seek attention by feigning illnesses in online venues such as chat rooms, message boards, and Internet Relay Chat (IRC). It is different from catfishing, where the person feigns an identity to seek attention by online dating. It has been described in medical literature as a manifestation of factitious disorder imposed on self, or if claiming illness of a child or other family member, factitious disorder imposed on another. Reports of users who deceive Internet forum participants by portraying themselves as gravely ill or as victims of violence first appeared in the 1990s due to the relative newness of Internet communications. The pattern was identified in 1998 by psychiatrist Marc Feldman, who created the term "Münchausen by Internet" in 2000. It is not included in the fifth revision of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). The development of factitious disorders in online venues is made easier by the availability of medical literature on the Internet, the anonymous and malleable nature of online identities, and the existence of communication forums established for the sole purpose of giving support to members facing significant health or psychological problems. Several high-profile cases have demonstrated behavior patterns which are common among those who pose as gravely ill or as victims of violence, or whose deaths are announced to online forums. The virtual communities that were created to give support, as well as general non-medical communities, often express genuine sympathy and grief for the purported victims. When fabrications are suspected or confirmed, the ensuing discussion can create schisms in online communities, destroying some and altering the trusting nature of individual members in others.
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  • 07 Nov 2022
Topic Review
2012 Phenomenon
The 2012 phenomenon was a range of eschatological beliefs that cataclysmic or transformative events would occur around 21 December 2012. This date was regarded as the end-date of a 5,126-year-long cycle in the Mesoamerican Long Count calendar, and festivities took place on 21 December 2012 to commemorate the event in the countries that were part of the Maya civilization (Mexico, Guatemala, Honduras, and El Salvador), with main events at Chichén Itzá in Mexico and Tikal in Guatemala. Various astronomical alignments and numerological formulae were proposed for this date. A New Age interpretation held that the date marked the start of a period during which Earth and its inhabitants would undergo a positive physical or spiritual transformation, and that 21 December 2012 would mark the beginning of a new era. Others suggested that the date marked the end of the world or a similar catastrophe. Scenarios suggested for the end of the world included the arrival of the next solar maximum, an interaction between Earth and the supermassive black hole at the center of the galaxy, or Earth's collision with a mythical planet called Nibiru. Scholars from various disciplines quickly dismissed predictions of cataclysmic events as they arose. Mayan scholars stated that no classic Mayan accounts forecast impending doom, and the idea that the Long Count calendar ends in 2012 misrepresented Mayan history and culture. Astronomers rejected the various proposed doomsday scenarios as pseudoscience which is easily refuted by elementary astronomical observations.
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  • 07 Nov 2022
Topic Review
2017 Catalan Independence Referendum
The Catalan independence referendum of 2017, also known by the numeronym 1-O (for "1 October") in Spanish media, was an independence referendum held on 1 October 2017 in the Spanish autonomous community of Catalonia, passed by the Parliament of Catalonia as the Law on the Referendum on Self-determination of Catalonia and called by the Generalitat de Catalunya. It was declared unconstitutional on 7 September 2017 and suspended by the Constitutional Court of Spain after a request from the Spanish government, who declared it a breach of the Spanish Constitution. Additionally, in early September the High Court of Justice of Catalonia had issued orders to the police to try to prevent it, including the detention of various persons responsible for its preparation. Due to alleged irregularities during the voting process as well as to the use of force by the National Police Corps and Civil Guard, international observers invited by the Generalitat declared that the referendum failed to meet the minimum international standards for elections. The referendum was approved by the Catalan parliament in a session in which only nationalist parliamentarians participated on 6 September 2017 along with the Law of juridical transition and foundation of the Republic of Catalonia the following day 7 September, which stated that independence would be binding with a simple majority, without requiring a minimum turnout. After being suspended, the law was finally declared void on 17 October, being also unconstitutional according to the Statute of Autonomy of Catalonia which requires a two-thirds majority, 90 seats, in the Catalan parliament for any change to Catalonia's status. The referendum question, which voters answered with "Yes" or "No", was "Do you want Catalonia to become an independent state in the form of a republic?". The "Yes" side won, with 2,044,038 (92.01%) voting for independence and 177,547 (7.99%) voting against, on a turnout of 43.03%. The Catalan government estimated that up to 770,000 votes were not cast due to polling stations being closed off during the police crackdown, although the "universal census" system introduced earlier in the day allowed electors to vote at any given polling station. Catalan government officials have argued that the turnout would have been higher were it not for Spanish and Catalan police suppression of the vote. On the other hand, most voters who did not support Catalan independence did not turn out, as the constitutional political parties asked citizens not to participate in what they considered an illegal referendum. Additionally, numerous cases of voters casting their votes several times or with lack of identification were reported, and the counting process and the revision of the census were not performed with quality standards ensuring impartiality. In the days leading to the referendum, the High Court of Justice of Catalonia ordered police forces to impede the use of public premises for the imminent voting. However, on the day of the referendum, the inaction of part of the autonomous police force of Catalonia, the Mossos d'Esquadra, allowed many polling stations to open. The National Police Corps and the Guardia Civil intervened and raided several polling stations after they opened. 893 civilians and 111 agents of the National Police and the Guardia Civil were reported to have been injured. According to various sources these previously reported figures may have been exaggerated. According to the judge from Barcelona who is currently investigating the accusations of police violence, there were 218 persons injured on that day in the city of Barcelona alone, 20 of whom were agents. According to the official final report by the Catalan Health Service (CatSalut) of the Generalitat 1066 civilians, 11 agents of the National Police and the Guardia Civil and 1 agent of the regional police, the Mossos d'Esquadra, were injured. The United Nations High Commissioner for Human Rights, Zeid Ra'ad Al Hussein, urged the Spanish government to prove all acts of violence that took place to prevent the referendum. The police action also received criticism from Amnesty International and Human Rights Watch which defined it as an "excessive and unnecessary use of force". Spanish Supreme Court judge Pablo Llarena stated Puigdemont ignored the repeated warnings he received about the escalation of violence if the referendum was held. Mossos d'Esquadra are being investigated for disobedience, for allegedly not having complied with the orders of the High Court of Justice of Catalonia. Including Josep Lluís Trapero Álvarez, the Mossos d'Esquadra major, who is being investigated for sedition by the Spanish National Court. Mossos d'Esquadra deny those accusations and allege they obeyed the orders but applied the principle of proportionality, which is required by Spanish law in all police operations.
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  • 07 Nov 2022
Topic Review
Project 4.1
Project 4.1 was the designation for a medical study conducted by the United States of those residents of the Marshall Islands exposed to radioactive fallout from the March 1, 1954 Castle Bravo nuclear test at Bikini Atoll, which had an unexpectedly large yield. Government and mainstream historical sources point to the study being organized on March 6 or March 7, 1954, six days after the Bravo shot.
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  • 07 Nov 2022
Topic Review
Katyusha Rocket Launcher
The Katyusha multiple rocket launcher (Russian: Катю́ша) is a type of rocket artillery first built and fielded by the Soviet Union in World War II. Multiple rocket launchers such as these deliver explosives to a target area more quickly than conventional artillery, but with lower accuracy and requiring a longer time to reload. They are fragile compared to artillery guns, but are inexpensive, easy to produce, and usable on any chassis. The Katyushas of World War II, the first self-propelled artillery mass-produced by the Soviet Union, were usually mounted on ordinary trucks. This mobility gave the Katyusha, and other self-propelled artillery, another advantage: being able to deliver a large blow all at once, and then move before being located and attacked with counter-battery fire. Katyusha weapons of World War II included the BM-13 launcher, light BM-8, and heavy BM-31. Today, the nickname is also applied to newer truck-mounted post-Soviet – in addition to non-Soviet – multiple rocket launchers, notably the common BM-21 Grad and its derivatives.
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