All articles starting with R
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Ratheesh Balakrishnan Poduval
Ratheesh Balakrishnan Poduval (രതീഷ് ബാലകൃഷ്ണന് പൊതുവാള്) is an Indian Malayalam film director, screenwriter, and production designer from Payyannur, Kerala, known for Android Kunjappan Version 5.25 (2019), Kanakam Kamini Kalaham, and the State Award-winning Nna Thaan Case Kodu (2022).
Rather Be
"Rather Be" is a 2014 song by Clean Bandit featuring Jess Glynne that topped the UK chart for four weeks and won the Grammy for Best Dance Recording.
Rather Lie
Rather Lie is a 2025 song by Playboi Carti featuring The Weeknd, track 8 on the album MUSIC (AWGE/Interscope). Produced by F1LTHY, Ojivolta, Ramzoid, and Twisco; reached No. 4 on the Billboard Hot 100 and No. 10 in the UK; subject of AI-vocals rumors Carti denied. Distinct from same-titled songs by Robino from the Valley, vwontop, and lil woolie.
Rathgall Hillfort
Rathgall Hillfort (An Ráth Gheal), Rath East, County Wicklow, Ireland: a multivallate Late Bronze Age hillfort (12th–11th centuries BC) with three ramparts and a medieval inner cashel, excavated by Barry Raftery from 1969, yielding over 10,000 finds.
Rathindra Bose (রথীন্দ্র বসু)
Rathindra Bose (রথীন্দ্র বসু), also spelled Rathindranath Bose, is a BJP politician and chartered accountant who became Speaker of the 18th West Bengal Assembly on 15 May 2026, the first from North Bengal, first CA, and first BJP legislator in the post.
Rathindranath Tagore (রথীন্দ্রনাথ ঠাকুর)
Rathindranath Tagore, also known as Rathindranath Thakur (রথীন্দ্রনাথ ঠাকুর), was an Indian agriculturist and eldest son of Rabindranath Tagore who served as the first vice-chancellor of Visva-Bharati from 1951 to 1953.
Rathore dynasty of Marwar
The Rathore dynasty of Marwar (राठौड़) was a Rajput ruling house that governed Marwar in western Rajasthan from the thirteenth century into the twentieth, ruling from Mandore and later Jodhpur.
Rathore rebellion
The Rathore rebellion (मारवाड़ विद्रोह) was a Rajput uprising against Mughal emperor Aurangzeb in Marwar, beginning in 1678 and ending with Ajit Singh's restoration in 1707.
Rathrimazha
Rathrimazha (രാത്രിമഴ, "Night Rain") is a Malayalam poem by Sugathakumari, title poem of her 1977 collection, whose sickbed speaker identifies herself with the night rain.
Rati (रति)
Rati (रति) is the Hindu goddess of love and sexual pleasure, consort of Kamadeva. Born from Daksha's sweat per the Kalika Purana, she laments Kama's burning in Kalidasa's Kumarasambhava and is reborn as Mayavati, reunited with Kama as Pradyumna.
Rati Agnihotri (रति अग्निहोत्री)
Rati Agnihotri (रति अग्निहोत्री), born 1960 in Mumbai, is an Indian actress of Tamil debut (Puthiya Vaarpugal, 1979) and 1980s Hindi fame (Ek Duuje Ke Liye), who left films in 1985 and returned in 2001.
Rati Pandey
Rati Pandey (born 1982, Assam) is an Indian television actress known as Nupur in Miley Jab Hum Tum and Indira Sharma in Zee TV's Hitler Didi (2011–2013, 448 episodes); later roles include Begusarai, Porus, and Devi Adi Parashakti.
Ratib of the Mahdi
The Ratib of the Mahdi (رتيب المهدي) is a book of prayers composed by Muhammad Ahmad, the Mahdi of the Sudan, made obligatory for his followers.
Ratibida columnifera
Ratibida columnifera, upright prairie coneflower or Mexican hat, is a native Great Plains perennial forb in Asteraceae with a columnar flower disk, yellow to maroon rays, used in prairie restoration.
Ratification
Ratification is the international act by which a state consents to be bound by a treaty under the Vienna Convention on the Law of Treaties; distinct from signature and accession, and shaped by domestic constitutional approval rules.
Ratification of the Treaty of Lisbon
Ratification of the Treaty of Lisbon: approval by all 27 EU member states of the treaty signed 13 December 2007, via parliaments and two Irish referendums (2008 rejected 53.4% no; 2009 passed 67.1%), entering into force 1 December 2009.
Rating curve
A rating curve is the empirical relation between water level and discharge at a stream gauging station, used to turn continuous stage records into continuous river discharge records.
Rating of perceived exertion
Rating of perceived exertion (RPE) is a psychometric scale on which a person rates how hard their physical exertion feels, used to monitor and prescribe exercise intensity.
Rating system of the Royal Navy
The rating system of the Royal Navy categorized British sailing warships into six rates by crew size and later by guns, from the early 17th century to the mid 19th.
Ratingen
Ratingen, town in Kreis Mettmann, North Rhine-Westphalia, northeast of Düsseldorf; chartered 1276 by Count Adolf von Berg, site of the 1783/84 Cromford mill, first mechanical cotton spinning factory on the European continent; about 89,000 residents.
Ratio
A ratio is a comparison of two quantities expressing their relative size, written as a to b, a:b, or a/b; a 2:1 ratio means the first is twice the second.
Ratio analysis
Ratio analysis is a financial analysis method that computes ratios from a firm's balance sheet and income statement to assess profitability, liquidity, solvency, efficiency, and market valuation.
Ratio control
Ratio control is a process-control strategy that keeps one flow proportional to another, independently varying flow, so a mixture or reaction holds a specified composition or condition.
Ratio distribution
A ratio distribution, also called a quotient distribution, is the probability distribution of a random variable formed as the quotient of two random variables, Z = X/Y.
Ratio Educationis
Ratio Educationis was a royal decree issued by Queen Maria Theresa in 1777, the first comprehensive state regulation of public education in the Kingdom of Hungary.
Ratio estimation
Ratio estimation is a survey sampling method that estimates a population total or mean by scaling the sample ratio of two means by a known auxiliary total.
Ratio estimator
The ratio estimator is a survey-sampling estimator of a population total or mean that uses a known auxiliary total, such as cultivated area, to gain precision.
Ratio test
The ratio test, also known as d'Alembert's ratio test, is a convergence test for infinite series, giving absolute convergence when the limit of consecutive-term ratios is below 1.
Ratiometric fluorescence detection
Ratiometric fluorescence detection is an analytical method reporting analyte concentration as a ratio of two fluorescence bands, self-calibrating against dye concentration, illumination drift, and photobleaching.
Ratiometric imaging
Ratiometric imaging is a microscopy technique that measures ion concentrations or pH by taking the ratio of fluorescence signals at two wavelengths, canceling dye and illumination variations.