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Polarled Gas Pipeline
Polarled is a 482-kilometer gas pipeline on the Norwegian continental shelf, running from the Aasta Hansteen field to the Nyhamna plant, with gas transport starting in 2018.
Polaroid Corporation
Polaroid Corporation was an American photography company founded by Edwin H. Land in 1937, best known for inventing instant photography; it went bankrupt in 2001.
Polaroid Model 95
The Polaroid Model 95 was the first commercially successful instant camera, sold by Polaroid from November 1948 and producing a print in about a minute.
Polars (software)
Polars: open-source Rust DataFrame library and query engine for Python, R, NodeJS, using Apache Arrow columnar format, lazy query optimization, and streaming execution; first committed 23 June 2020 by Ritchie Vink.
Polarstern
Polarstern is a German research icebreaker operated by the Alfred Wegener Institute in Bremerhaven, commissioned in 1982 to work alternately in the Arctic and Antarctic.
Polavaram Project (పోలవరం ప్రాజెక్టు)
The Polavaram Project (పోలవరం ప్రాజెక్టు), also called Polavaram Dam, is a multi-purpose irrigation project under construction on the Godavari river at Polavaram in Andhra Pradesh, India.
Polder
A polder is low-lying land enclosed by dikes, with its water level controlled by sluices and pumping stations; polders cover roughly half the Netherlands, reclaimed since the 12th century.
Poldhu Wireless Station
Poldhu Wireless Station was a high-power radio transmitting station built by Guglielmo Marconi on the Lizard peninsula in Cornwall, England, operating from 1900 to 1933.
Pole placement
Pole placement, also known as pole assignment or full-state feedback design, is a control method that computes feedback gains placing a linear system's closed-loop poles at desired locations.
Polearm
A polearm, also called a pole weapon, is a close-combat weapon with its fighting head fitted to the end of a long shaft, covering spears, pikes, and halberds.
Polenergia
Polenergia S.A. is a Polish, Warsaw Stock Exchange-listed renewable energy group and Poland's largest privately owned, operating wind and solar farms and building Baltic offshore wind farms with Equinor.
Polestar
Polestar, also known as Volvo Polestar, is a Swedish electric performance car brand in Gothenburg that grew out of a Volvo racing team founded in 1996.
Polestar 2
The Polestar 2 is a five-door electric fastback from Polestar, a Swedish brand owned by Volvo and Geely, revealed in 2019 to compete with the Tesla Model 3.
Polestar 6
The Polestar 6 is a planned two-door electric roadster from Swedish carmaker Polestar, announced in 2022 as a production version of the O₂ concept, with launch delayed from 2026 to beyond 2029.
Polestar 7
The Polestar 7 is a premium compact electric SUV from Polestar, planned for 2028 as the company's first vehicle built in Europe, at Volvo Cars' new Kosice, Slovakia plant.
Police box
A police box, also called a police telephone box, is a street kiosk giving the public and officers a direct telephone link to the police station.
Police car
A police car, also known as a police cruiser or squad car, is a vehicle used by law enforcement for patrol, pursuit, prisoner transport, and as a mobile office.
Police motorcycle
A police motorcycle is a purpose-built or police-converted motorcycle used by law enforcement for traffic enforcement, escort and motorcade duty, and rapid movement through congested traffic.
Police vehicles in the United States and Canada
Police vehicles in the United States and Canada are civilian-derived automobiles, mostly full-size SUVs, built to police package specifications for better acceleration, braking, and handling.
Polícia Rodoviária Federal
The Polícia Rodoviária Federal (PRF, Federal Highway Police) is Brazil's federal police force for patrolling federal highways, traffic enforcement, and fighting crime, created in 1928.
Policy distillation
Policy distillation is a reinforcement learning technique that transfers a trained agent's policy into a smaller student network, compressing expensive policies or merging several expert agents into one multi-task model.
Policy gradient method
A policy gradient method is a reinforcement learning technique that optimizes a parameterized policy directly by gradient ascent on expected return, rather than learning a value function.
Policy gradient methods
Policy gradient methods are reinforcement learning algorithms that optimize a policy directly by ascending the estimated gradient of expected reward, starting with REINFORCE in 1992.
Polikarpov I-16
The Polikarpov I-16 was a Soviet single-seat fighter designed by Nikolai Polikarpov and the first monoplane fighter with an enclosed cockpit and retractable gear, serving from 1935 to 1943.
Polikarpov Po-2 (По-2)
The Polikarpov Po-2 (По-2), designed by Nikolai Polikarpov, was a Soviet two-seat biplane trainer first flown in 1928 as the U-2, with over 33,000 built.
Polina Anikeeva
Polina Anikeeva is a materials scientist at MIT who develops flexible neural probes and wireless methods for controlling neurons, and heads MIT's materials science department since 2024.
Polina Bayvel
Polina Bayvel is a British professor of optical communications and networks at University College London who founded the Optical Networks Group in 1994 and set multiple fiber-capacity records.
Polish State Railways
Polish State Railways (Polskie Koleje Państwowe, PKP) is the Polish state railway enterprise, established in 1926 by decree, operating as the parent company of the PKP Group.
Polish, Czechoslovak and Romanian aviation regiments in the Cold War
The Polish, Czechoslovak and Romanian aviation regiments in the Cold War were national-manned Warsaw Pact tactical air formations, built on Soviet patterns and dissolved between 1989 and 1995.
Politechnika Warszawska PW-5
The Politechnika Warszawska PW-5, also known as the PZL PW-5, is a Polish single-seat composite glider that won the FAI competition to become the World Class glider in 1993.