All articles starting with P

Proofreading

Proofreading is the final quality check before publication, following copyediting, in which a reader marks residual spelling, grammar, and layout errors on the typeset proof without rewriting the content.

Proofs of convergence of random variables

Proofs of convergence of random variables presents the four modes of convergence in probability theory, the strict hierarchy among them, and proof tools such as Borel–Cantelli and uniform integrability.

Prop

Prop (short for "property") is the movable object used in theater, film, or TV performance that is neither set nor costume. Covers etymology, prop categories, the props department, and reuse.

Oct 3, 2026

Prop Culture

Prop Culture is an 8-episode Disney+ docuseries, also called Cinema Relics: Iconic Art of the Movies, hosted by collector Dan Lanigan; it premiered May 1, 2020, was removed from Disney+ in 2023.

Propachlor

Propachlor (2-chloro-N-isopropylacetanilide, CAS 1918-16-7) is a chloroacetanilide herbicide used since 1964 on corn, sorghum, and onion seed; EPA classifies it a likely human carcinogen with an oral RfD of 0.013 mg/kg-day.

Propafenone

Propafenone, sold as Rythmol, is a class 1C antiarrhythmic drug developed in Germany and marketed since 1977, used for atrial fibrillation in patients without structural heart disease.

Propaganda

Propaganda: deliberate, systematic communication using facts, half-truths, or lies, symbols and manipulation to influence public opinion. Key definitions by Jowett & O'Donnell and Qualter. Covers persuasion/PR boundaries, WWI posters, firehose of falsehood, computational propaganda.

Propaganda (band)

Propaganda, German synth-pop band formed 1982 in Düsseldorf (not the Macedonian band Bernays Propaganda or other namesakes), signed to ZTT; known for A Secret Wish (1985), Dr. Mabuse, Duel, P:Machinery; later split into xPropaganda and a 2024 Propaganda reforming.

Propaganda Due

Propaganda Due (P2) was a covert Italian Masonic lodge under the Grand Orient of Italy, led by Licio Gelli. Its 961-member list surfaced in 1981, triggering dissolution by law, a parliamentary inquiry, and the Banco Ambrosiano scandal.

Propaganda film

Propaganda film is a motion picture whose primary purpose is persuasion rather than entertainment or record-keeping. It is used by governments, such as Russia, to promote specific political narratives.

Propaganda in Nazi Germany

Propaganda in Nazi Germany: the regime's systematic use of media through the 1933 Reich Ministry of Public Enlightenment and Propaganda under Goebbels to win support, enable persecution, and mask the Holocaust.

Propaganda in North Korea

Propaganda in North Korea: state-run messaging by the WPK Propaganda and Agitation Department through KCNA and Rodong Sinmun, centered on the Kim personality cult and Juche ideology, with loudspeaker broadcasts across the DMZ.

Propaganda in the Soviet Union

Propaganda in the Soviet Union (советская пропаганда): the party- and state-run dissemination of Marxism-Leninism through Agitprop, Glavlit censorship, press, posters, schools and the Stalin-edited Short Course, from 1917 until the system ended with the USSR in 1991.

Propaganda model

The propaganda model, also known as Chomsky's propaganda model, is Edward S. Herman and Noam Chomsky's 1988 theory that five structural filters shape American news coverage to serve powerful interests.

Propaganda Movement

The Propaganda Movement (1882–1896) was a Filipino reform campaign led by Rizal, del Pilar, and López Jaena in Spain, centered on the newspaper La Solidaridad, demanding assimilation and Cortes representation; its failure fed the 1896 Katipunan revolution.

Propaganda of the deed

Propaganda of the deed (French: propagande par le fait), also propaganda by the deed, is a 1870s anarchist strategy of exemplary violent acts meant as propaganda, linked to 1880s–1920s anarchist terrorism.

Propaganda techniques

Propaganda techniques are recurring persuasive methods like name-calling, glittering generalities, transfer, card stacking, and bandwagon, first cataloged by the Institute for Propaganda Analysis in 1937 and now targeted by SemEval detection benchmarks and inoculation-based pre-bunking.

Propagandhi

Propagandhi, Canadian punk rock and metal band formed in Portage la Prairie, Manitoba in 1986 by Chris Hannah and Jord Samolesky, now based in Winnipeg; eight albums since 1993, from Fat Wreck Chords to Epitaph, known for left-wing political lyrics.

Propagation of chaos

Propagation of chaos is a property of large systems of interacting random particles: as the number of particles tends to infinity, any fixed finite subset behaves as if independent.

Propagation of uncertainty

Propagation of uncertainty, also known as propagation of error, is the calculation of how the uncertainties of input quantities combine to give the uncertainty of a quantity derived from them through a measurement model.

Propagation-based phase-contrast imaging

Propagation-based phase-contrast imaging (PBI) is an X-ray imaging method where a wavefield travels in free space before the detector, converting phase shifts into visible intensity fringes; it is the most used phase-contrast setup at synchrotrons.

Propagator

A propagator, also called a causal Green's function, in quantum field theory is the two-point correlation function of a field, inverting the field's quadratic operator.

Oct 22, 2026

Propala hramota

Propala hramota (Пропала грамота, "The Lost Charter") was an avant-garde group of three Kyiv poets, Yurko Pozayak, Viktor Nedostup, and Semen Lyboń, active during perestroika in the late 1980s and early 1990s.

Propamidine

Propamidine, also known by the brand name Brolene, is an aromatic diamidine antiseptic used topically, most commonly in 0.1% eye drops for minor eye and eyelid infections.

Propamocarb

Propamocarb, a carbamate systemic fungicide (FRAC 28, usually as the hydrochloride salt), controls oomycetes such as Pythium, Phytophthora, and downy mildews by disrupting lipid synthesis and cell membranes; approved in the EU and registered in the US and Canada.

Propan-1-ol

Propan-1-ol, also known as n-propyl alcohol or 1-propanol, is a three-carbon primary alcohol that is a colorless liquid miscible with water, used mainly as an industrial solvent.

Propane

Propane (C3H8) is a three-carbon alkane gas, sold as liquefied petroleum gas and used mainly for heating, as an engine fuel, and as the refrigerant R-290.

Propane dehydrogenation

Propane dehydrogenation (PDH) is an industrial catalytic process converting propane into propylene and hydrogen, an on-purpose propylene route that reached 12% of world production in 2019.

Propane heat pump

A propane heat pump is a heat pump using propane, or R290, as its refrigerant instead of synthetic fluorinated gases, cutting climate impact but requiring safety measures for its flammability.