All articles starting with P
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Pero de Magalhães Gândavo
Pero de Magalhães Gândavo was a Portuguese chronicler and grammarian, born in Braga, whose 1576 História da província Santa Cruz was the first history of Brazil.
Pero Lopes de Sousa
Pero Lopes de Sousa, also written Pêro Lopes de Souza, was a Portuguese navigator who kept the diary of the 1530 expedition to Brazil and died lost at sea around 1539.
Pero Vaz de Caminha
Pero Vaz de Caminha (c. 1450 – December 1500) was a Portuguese scribe who sailed with Cabral in 1500 and wrote the letter describing Brazil's discovery.
Peroá Gas Field
The Peroá Gas Field is an offshore natural gas field in the Espírito Santo Basin, Brazil, about 52 kilometers off Linhares, producing from a fixed platform since 2006.
Perodua
Perodua (Perusahaan Otomobil Kedua) is Malaysia's second national carmaker, established in 1993 with Daihatsu and now the country's sales leader with roughly 44 percent of the market.
Perodua Myvi
The Perodua Myvi is a five-door subcompact hatchback produced by Malaysia's Perodua since May 2005, based on the Daihatsu Boon and long the country's best-selling car.
Perodua QV-E
The Perodua QV-E is a battery electric hatchback produced by Malaysian carmaker Perodua, launched in December 2025 as the company's first electric vehicle and Malaysia's first homegrown one.
Perognathus
Perognathus (silky pocket mice) is a genus of 10 small heteromyid rodents of western North America, from Canada to Mexico, with fur-lined cheek pouches, soft pelage, and seed-based desert diets.
Perolniyoc
Perolniyoc is a waterfall in the Socma community of the Ollantaytambo district, Cusco region of Peru, with the Inca-era archaeological site of Raqaypata directly above it.
Peromyscus
Peromyscus, the deer mice and white-footed mice, is a genus of abundant North American cricetid rodents, reservoirs of Lyme disease and hantavirus, and a laboratory model for ecology, aging, and infection tolerance.
Peroni Brewery
Peroni Brewery (Birra Peroni) is an Italian brewing company founded in 1846 by Francesco Peroni, best known for its Peroni lager and Peroni Nastro Azzurro.
Peroniceras
Peroniceras de Grossouvre 1894 is an extinct Late Cretaceous collignoniceratid ammonite genus with three continuous ventral keels; its species P. tridorsatum indexes the Middle Coniacian across Europe, Africa, and North America.
Peronism
Peronism (peronismo), the Argentine populist movement founded by Juan Domingo Perón, president 1946–1955 and 1973–1974; Justicialist doctrine of social justice, political sovereignty, and economic independence; labor-union-based; dominant since the 1940s, now weakened after Milei's 2023 victory.
Peronist Resistance
The Peronist Resistance (Resistencia peronista) was the clandestine, largely union opposition by Juan Perón's supporters in Argentina after the 1955 coup, until his party's ban was lifted in 1973.
Peronospora
Peronospora, downy mildew genus of oomycete Peronosporaceae established by Corda in 1837; over 400 obligate biotrophic, host-specific plant pathogen species including P. belbahrii on basil and P. effusa on spinach.
Peroral cholangioscopy
Peroral cholangioscopy (POCS) is an endoscopic technique that passes a small cholangioscope through the mouth into the bile ducts to diagnose strictures and remove difficult stones.
Peroral endoscopic myotomy
Peroral endoscopic myotomy (POEM) is an endoscopic operation that cuts the lower esophageal sphincter muscle to treat achalasia, performed through the mouth with no skin incision.
Peroushtitsa
Peroushtitsa (Перущица) is a town in the Rhodope foothills of southern Bulgaria near Plovdiv, home of the Red Church, a 4th-6th century tetraconchal early Christian basilica and martyrium restored in 2012-2013.
Perovskite
Perovskite is a calcium titanate mineral, CaTiO₃, found in the Ural Mountains in 1839 and named after Count Lev Perovski; the name also covers the ABX₃ crystal-structure family.
Perovskite (structure)
The perovskite structure is a crystal structure of formula ABX3 in which corner-sharing BX6 octahedra form a framework with larger A cations in the cavities between them.
Perovskite encapsulation
Perovskite encapsulation is the sealing of perovskite solar cells in barrier materials, usually glass with a polymer layer and edge seal, to protect them from moisture and heat.
Perovskite exsolution
Perovskite exsolution is a process in which metal cations in a perovskite oxide lattice migrate to the surface under reducing conditions and form anchored nanoparticles.
Perovskite field-effect transistor
A perovskite field-effect transistor (PeFET) is a transistor whose channel is built from a metal halide perovskite, first reported by IBM in 1999 for logic circuits and photodetectors.
Perovskite laser
Perovskite lasers are semiconductor lasers that use metal halide perovskites as the gain medium. First demonstrated in 2014, they are studied for displays, optical communications, and photonic chips.
Perovskite LED
A perovskite LED (PeLED) is a light-emitting diode whose emissive layer is a metal halide perovskite, with high color purity and efficiencies nearing 30% since 2014.
Perovskite light-emitting diode
Perovskite light-emitting diodes (PeLEDs) are LEDs with a metal halide perovskite emissive layer. Since 2014 their efficiencies have exceeded 30%, making them candidates for next-generation displays.
Perovskite mini-module
A perovskite mini-module is a small photovoltaic module in which perovskite solar cells are monolithically series-interconnected on a single substrate, typically 200 to 800 cm².
Perovskite nanocrystal
A perovskite nanocrystal is a nanometer-sized crystal of a lead halide perovskite semiconductor, studied as a light-emitting and light-harvesting material for LEDs and solar cells.
Perovskite nanocrystal lasers
Perovskite nanocrystal lasers are lasers whose gain medium is colloidal or thin-film lead halide perovskite nanocrystals, chiefly CsPbX3, offering low thresholds, high gain, and visible-wavelength tunability.
Perovskite nanocrystal scintillator
A perovskite nanocrystal scintillator is a radiation detector material made of perovskite semiconductor nanocrystals, typically CsPbBr3, that converts X-rays and gamma rays into visible light, first reported in 2018.