All articles starting with S
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Sindhi Sufi poetry
Sindhi Sufi poetry is the mystical, devotional verse composed in Sindhi between roughly the 15th and 19th centuries, reaching its peak in Shah Abdul Latif's Risalo.
Sindhi wai
Sindhi wai (وائي) is a classical genre of Sindhi poetry composed to be sung, set to melodies called surs, with Shah Abdul Latif Bhitai as its central figure.
Sindhis (سنڌي)
Sindhis (سنڌي) are an Indo-Aryan people of Sindh in the lower Indus valley, Pakistan, speaking Sindhi; split by the 1947 Partition into a Muslim majority in Pakistan (14.31% of the 2023 census) and a Hindu diaspora in India and worldwide.
Sindhis in India
Sindhis in India: the Hindu Sindhi community, about one million people, who migrated from Sindh, Pakistan, after the 1947 Partition; deterritorialized refugees known for trade, language shift, and Sindhi's Eighth Schedule status.
Sindhu Bhairavi (சிந்து பைரவி)
Sindhu Bhairavi (சிந்து பைரவி), 1985 Tamil musical drama by K. Balachander starring Sivakumar, Suhasini, Sulakshana; Ilaiyaraaja music; three National Film Awards and a Filmfare Best Film – Tamil win.
Sindhu Menon
Sindhu Menon (born 1985, Bangalore) is an Indian actress who worked in Tamil, Telugu, Malayalam and Kannada films, debuting as a child artiste in Rashmi (1994) and known for Eeram and Chandamama.
Sindhu Samaveli (சிந்து சமவெளி)
Sindhu Samaveli (சிந்து சமவெளி) is a 2010 Tamil drama thriller directed by Samy, starring Harish Kalyan, Amala Paul, and Ghajini, about a father-in-law and daughter-in-law affair; A-certified, box-office failure, inspired by Turgenev's First Love.
Sindhu Vee
Sindhu Vee (Venkatanarayanan), born 1969 in New Delhi, is a UK-based stand-up comedian, writer, and actor; ex-Barclays investment banker, Edinburgh Best Newcomer nominee for Sandhog, Mrs. Phelps in Matilda the Musical.
Sindhubaadh (சிந்துபாத்)
Sindhubaadh (சிந்துபாத்) is a 2019 Tamil action thriller directed by S. U. Arun Kumar, starring Vijay Sethupathi, Anjali, and Surya Vijay Sethupathi; a Tenkasi thief rescues his wife from a Thai skin-trade gang, released 27 June 2019 after an Arka Media legal delay.
Sindhutai Sapkal
Sindhutai Sapkal (सिंधुताई सपकाळ), the 'Mother of Orphans', Indian social worker from Maharashtra who raised over a thousand orphans, founded multiple ashrams, and received the Padma Shri in 2021; died in Pune on 4 January 2022.
Sindibad Amusement Park
Sindibad Amusement Park (Parc Sindibad), Casablanca's Aïn Diab theme park and zoo, Morocco's largest at ~32 ha; reopened 2015 with Compagnie des Alpes/Walibi involvement; Sindipark SA, 50% acquired by Pickalbatros in 2025.
Sindicato de Telecomunicaciones y Servicios para la Ciudadanía
The Sindicato de Telecomunicaciones y Servicios para la Ciudadanía (STC), formerly the Sindicato de Trabajadores de Comunicaciones, is a Spanish union organizing telecommunications workers, formed by merger in 2002.
Sinding-Larsen-Johansson disease
Sinding-Larsen-Johansson disease (SLJ syndrome), a traction osteochondrosis causing pain at the inferior pole of the patella in active adolescents aged about 10-14; distinguished from Osgood-Schlatter disease by the injured end of the patellar tendon.
Sindiwe Magona
Sindiwe Magona, born 1943, is a South African writer and poet whose autobiographies, novels, and more than 100 children's books draw on her life under apartheid.
Sindoor
Sindoor (सिंदूर), also sindur or kumkum, is a vermilion (mercuric sulphide) powder Hindu married women apply in the hair parting; also used in worship, weddings, forensics, and linked to lead-adulteration risks.
Sindos
Sindos (Σίνδος) is an ancient tell settlement on the Thermaic Gulf in Macedonia, Greece, some 20 km west of Thessaloniki, known for its richly furnished Archaic cemetery.
Sindre Henriksen
Sindre Henriksen (born 1992, Bergen) is a retired Norwegian speed skater, Fana IL, who won 2018 Olympic team pursuit gold, took World Single Distances silver and bronze, and retired in 2021.
Sine and cosine
Sine and cosine, also written sin and cos, are the two fundamental trigonometric functions, taking any real input, returning values between −1 and 1, and repeating every 2π.
Sine cosine algorithm
The sine cosine algorithm (SCA) is a gradient-free metaheuristic for continuous optimization that updates candidate solutions using sine and cosine fluctuations toward the best solution found so far.
Sine qua non
Sine qua non, Latin for "without which not" (from condicio sine qua non), names an indispensable condition. Used formally in English and in law as the but-for test of causation, criticized and refined via NESS.
Sine wave
A sine wave, also called a sinusoidal wave, is the simplest periodic waveform, varying as the sine of a steadily increasing angle and repeating every wavelength.
Sine-cosine encoder
A sine-cosine encoder, or sin/cos encoder, is a position sensor that outputs analog sine and cosine signals phase-shifted by 90 degrees, which electronics interpolate for high-resolution position feedback.
Sine-Gordon equation
The sine-Gordon equation is a nonlinear hyperbolic partial differential equation whose kink and antikink solutions behave as solitons, with applications in Josephson junctions and field theory.
Sine-Gordon model
The sine-Gordon model is a two-dimensional relativistic quantum field theory whose interaction is a cosine of the field; in 1975 Coleman showed it equals the massive Thirring model.
Sinéad Cusack
Sinéad Cusack (born 1948, Dalkey, Ireland) is an Irish actress, daughter of Cyril Cusack and wife of Jeremy Irons; an RSC Shakespearean stage star awarded for Our Lady of Sligo, also in V for Vendetta, Eastern Promises, and Napoleon (2023). Distinct from singer Sinéad O'Connor.
Sinéad Keenan
Sinéad Keenan, Irish actress born 1977 in Dublin; known as Nina in Being Human, Mel Jones in Little Boy Blue (BAFTA-nominated, RTS and Golden Nymph winner), and DCI Jess James in Unforgotten series 5–7; sister of actors Rory and Gráinne Keenan.
Sinéad O'Connor
Sinéad O'Connor, also Shuhada' Sadaqat (1966–2023), Irish singer-songwriter famed for "Nothing Compares 2 U" and her 1992 SNL protest; ten albums, shaved head, Catholic Church critic.
Sinecure
A sinecure (from Latin sine cura, "without care") is a paid post requiring little or no work, originally a church benefice without cure of souls, later a lucrative patronage office in the British state, largely abolished by 19th-century reform.
Sineenatha
Sineenatha (Sineenat Wongvajirapakdi, born Niramon Aunprom/Ounprom, 1985) is the Royal Noble Consort of Thailand's King Maha Vajiralongkorn, appointed July 2019, demoted October 2019, reinstated August 2020; distinct from the Telugu poet Śrīnātha.
Sinemurian
The Sinemurian is the second stage of the Early Jurassic, spanning roughly 199.5 to 192.9 million years ago, defined by a boundary stratotype on the coast of southwest England.