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Attingal Ranis
The Attingal Ranis (ആറ്റിങ്ങൽ) were matrilineal princesses who held sovereign authority over Attingal in southern Kerala, most notably Umayamma Rani, until Travancore absorbed the territory in 1731.
Attis
Attis (Ἄττης), consort deity of the Great Mother Cybele/Magna Mater of Anatolian origin, adopted into Greek and Roman religion; known for the self-castration myth, the Galli eunuch priests, and the March festival cycle.
Attitude (psychology)
In psychology, an attitude, or mental attitude, is a stable evaluation of a person, group, issue, or idea, learned rather than innate and ranging from negative to positive.
Attitude control
Attitude control is the spacecraft engineering method for holding a vehicle at a desired orientation or reorienting it, using sensors and actuators such as reaction wheels, thrusters, and magnetorquers.
Attitude Era
Attitude Era: WWE's (then WWF) adult-oriented programming period, c. 1996-2001, during the Monday Night Wars against WCW; stars Steve Austin, The Rock, Mankind; WWF's most prosperous era, ended by the 2001 WCW purchase.
Attitude indicator
The attitude indicator, also called the artificial horizon or gyro horizon, is a flight instrument showing an aircraft's pitch and bank, first produced by Sperry in 1929 for blind flying.
Attitude scale
An attitude scale is a psychometric instrument that measures a person's attitude by having them rate agreement with statements, most commonly in the Likert format.
Attock District
Attock District (ضلع اٹک), formerly Campbellpur, is a district on the Pothohar Plateau of northern Punjab, Pakistan, created in 1904, renamed Attock in 1978, with 2.17 million people (2023 census), six tehsils, and Akbar's 1581 fort on the Indus.
Attoor Ravi Varma
Attoor Ravi Varma (ആറ്റൂർ രവിവർമ്മ, 1930–2019) was an Indian poet and translator who pioneered modernist free verse in Malayalam and won major literary awards including the Kendra Sahitya Akademi Award.
Attorney at law
Attorney at law (attorney) is the formal US title for a licensed lawyer, interchangeable with lawyer in every state. Covers ABA-defined roles, conduct rules, licensure, and contrast with split solicitor/barrister professions.
Attorney general
Attorney general: the chief legal officer of a government, advising the executive and often overseeing prosecution. Descends from England's 1243 King's Attorney; exists in all 50 US states, the UK, Canada, and most democracies.
Attorney General for England and Wales
The Attorney General for England and Wales (AGEW) is the UK Government's chief legal adviser to the Crown, superintendent of the CPS and Serious Fraud Office, and holder of independent public interest functions; the current holder is Ellie Reeves KC MP.
Attorney General of India
The Attorney General of India (AGI), created under Article 76 of the Constitution, is the Government of India's chief legal adviser and topmost law officer. First held by M.C. Setalvad (1950); current incumbent R. Venkataramani, reappointed from 1 October 2025.
Attorney General of Ireland
The Attorney General of Ireland (Ard-Aighneacht na hÉireann) is the constitutional legal adviser to the Government of Ireland, its chief law officer, appointed on the Taoiseach's nomination.
Attorney General of Malta
The Attorney General of Malta is Malta's independent chief public prosecutor, an office created under British rule in 1832 and headed since 2020 by Victoria Buttigieg.
Attorney-General for Ireland
Attorney-General for Ireland: the pre-independence chief law officer whose functions passed under the Ministers and Secretaries Act 1924 to the Free State Attorney-General and continue in the modern constitutional office under Article 30 of the 1937 Constitution.
Attorney-General of Ceylon
The Attorney-General of Ceylon, formerly the Queen's Advocate of Ceylon, was the chief law officer and principal public prosecutor of Ceylon, renamed from Queen's Advocate in 1884.
Attorney–client privilege
Attorney-client privilege, the oldest common-law evidentiary privilege, protects confidential lawyer-client communications made to seek legal advice; it belongs to the client, has crime-fraud and third-party limits, and was reshaped for corporations by Upjohn (1981).
Attosecond
An attosecond (as) is a unit of time equal to 10⁻¹⁸ seconds, the timescale of electron motion in atoms; attosecond light pulses, first generated in 2001, earned the 2023 Nobel Prize in Physics.
Attosecond control of electrons emitted from a nanoscale metal tip
Attosecond control of electrons emitted from a nanoscale metal tip is a 2011 experiment by Krüger, Schenk, and Hommelhoff steering electron emission from a tungsten tip.
Attosecond electron diffraction
Attosecond electron diffraction is a proposed technique scattering attosecond electron pulses from molecules or solids to image electron motion, extending femtosecond ultrafast electron diffraction to faster timescales.
Attosecond electron interferometry
Attosecond electron interferometry is a set of laser techniques in which interference between photoelectron wave packets measures attosecond-scale emission delays, demonstrated in 2001 as RABBITT.
Attosecond electron microscopy
Attosecond electron microscopy, also called attomicroscopy, combines the ångström spatial resolution of electron microscopes with attosecond laser pulses to record electron motion in materials in real time.
Attosecond electron pulses
Attosecond electron pulses are bursts of free electrons lasting about 10⁻¹⁸ seconds, produced by laser modulation of electron beams to probe light-cycle dynamics in microscopes.
Attosecond field sampling
Attosecond field sampling is the direct, time-resolved measurement of a light pulse's electric-field waveform at attosecond resolution, capturing the carrier-envelope phase that intensity-based methods miss, using attosecond streaking or solid-state gates.
Attosecond interferometry
Attosecond interferometry is a family of measurement techniques that uses interference between quantum paths created by attosecond XUV light pulses to characterize attosecond pulses and measure electron dynamics.
Attosecond interferometry of tunneling in solids
Attosecond interferometry of tunneling in solids is a set of ultrafast optical techniques using attosecond light pulses and interferometric readout to time-resolve electron tunneling in condensed matter, supporting petahertz electronics.
Attosecond ionization time delay
Attosecond ionization time delay is the delay between a photon's absorption by an atom or molecule and the departure of the photoelectron, typically tens to hundreds of attoseconds.
Attosecond lighthouse
The attosecond lighthouse is a technique for producing isolated attosecond pulses by rotating the driving laser wavefront during high-order harmonic generation, so successive pulses separate spatially.
Attosecond metrology of Auger decay
Attosecond metrology of Auger decay is the set of experimental techniques measuring the few-femtosecond delay between inner-shell vacancy creation and Auger electron emission, pioneered by Ferenc Krausz with streaking methods.