All articles starting with P
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Parallel jaw gripper
A parallel jaw gripper is a robotic end effector whose two jaws move in parallel paths to grip parts, the most widely used mechanical gripper design.
Parallel kinematic machine
A parallel kinematic machine (PKM) connects its tool platform to a fixed base through multiple actuated limbs, providing high stiffness and low moving inertia but a small workspace.
Parallel Lines
Parallel Lines, Blondie's third studio album (September 1978, Chrysalis), produced by Mike Chapman; UK number 1 for four weeks, US number 6; spawned the transatlantic chart-topper "Heart of Glass"; worldwide sales estimates conflict (3 million vs 16 million).
Parallel Lives
Plutarch's Parallel Lives (Βίοι Παράλληλοι, Vitae Parallelae): paired Greek and Roman biographies, twenty-two surviving pairs with synkriseis, written early second century CE; moral purpose, not history.
Parallel mediation model
A parallel mediation model is a statistical mediation model in which an independent variable affects an outcome directly and through two or more correlated mediators, each indirect effect estimated simultaneously.
Parallel Mothers
Parallel Mothers (Madres paralelas) is Pedro Almodóvar's 2021 Spanish drama starring Penélope Cruz and Milena Smit as two mothers who give birth the same day, intertwining motherhood melodrama with Spain's Civil War mass graves; Venice premiere, Volpi Cup, 8 Goya nominations.
Parallel Networks (company)
Parallel Networks, LLC is an American patent assertion entity that licenses and litigates patents on managing dynamic web page generation requests, filing 16 lawsuits between 2006 and 2013.
Parallel parking
Parallel parking is the method of parking in line with the road by reversing into a curbside gap between vehicles, valued in dense cities but widely considered difficult.
Parallel port
The parallel port, also known as the printer port or LPT port, is a computer interface that transfers multiple bits at once, standardized as IEEE 1284 in 1994.
Parallel postulate
The parallel postulate, also known as Euclid's fifth postulate, is the plane geometry axiom stating that through a point not on a line passes exactly one parallel line.
Parallel process model
The parallel process model is a structural equation modeling approach for longitudinal data that estimates latent growth curves of two or more repeated measures at the same time.
Parallel prose
Parallel prose (pianwen 駢文) is a classical Chinese style built from paired clauses of four or six characters, dominant from the Six Dynasties through the Tang.
Parallel Random Access Machine
The Parallel Random Access Machine (PRAM) is an abstract model of parallel computation where synchronous processors share one unbounded memory, with variants EREW, CREW, and CRCW.
Parallel reaction monitoring
Parallel reaction monitoring (PRM) is a targeted mass spectrometry method that quantifies proteins by fragmenting one selected peptide precursor and measuring all its product ions.
Parallel synthesis
Parallel synthesis is a chemistry method that runs many separate reactions at once, each vessel making a different compound, to build compound libraries for drug discovery.
Parallel system of commanderies and kingdoms
The parallel system of commanderies and kingdoms (郡国并行) was the local governance arrangement of the early Western Han, in which centrally ruled commanderies and princely kingdoms coexisted.
Parallel Tales
Parallel Tales (Histoires parallèles) is Asghar Farhadi's 2026 French-language drama, in Cannes Competition, loosely based on Kieślowski's Dekalog VI, starring Isabelle Huppert as a novelist whose spied-upon neighbors enter her fiction; critically poorly received.
Parallel tempering
Parallel tempering, also called replica exchange, is an MCMC method where chains at different temperatures swap states, helping sampling escape local modes of multimodal distributions.
Parallel Thread Execution
Parallel Thread Execution (PTX) is Nvidia's low-level virtual machine and instruction set for CUDA GPUs, translated to native GPU code ahead of time or just in time.
Parallel transport
Parallel transport is a rule, given by a connection, for moving a vector along a curve in a curved space so it stays the same from point to point.
Parallel turn
The parallel turn is an alpine skiing technique where both skis stay parallel and turn together on matching edges, taught after beginner wedge (snowplow) turns.
Parallel Universe (Red Dwarf)
"Parallel Universe" is the Series II finale of Red Dwarf (BBC2, 11 October 1988), in which Holly's Hop Drive strands the crew with female counterparts Deb Lister and Arlene Rimmer, leaving Lister pregnant, resolved by the Backwards text crawl.
Parallel universes in fiction
Parallel universes in fiction: self-contained alternate worlds coexisting with our own, from Rosny aîné and Wells through Leinster's 1934 "Sidewise in Time" to Everett-inspired cinematic multiverses like Everything Everywhere All at Once.
Parallel voting
Parallel voting, also called mixed-member majoritarian (MMM), is a mixed electoral system with unlinked majoritarian and proportional tiers; used in Japan, South Korea, Lithuania, and about 22 chambers worldwide.
Parallel Web Systems
Parallel Web Systems is a Silicon Valley startup, founded by former Twitter CEO Parag Agrawal in 2023, that builds web search and research APIs for AI agents.
Parallel-plate capacitor
A parallel-plate capacitor is a system of two parallel conducting plates separated by a small distance d, with vacuum capacitance C = ε₀A/d, where A is plate area.
Parallelepiped
A parallelepiped is a three-dimensional solid whose six faces are all parallelograms, the 3D analog of a parallelogram, with cubes and rectangular blocks as special cases.
Parallelism (grammar)
Parallelism (grammar), or parallel structure, repeats the same grammatical form across related items in lists, comparisons, and correlative conjunctions; faulty parallelism harms clarity, and Lowth, Jakobson, and psycholinguistics treat it differently.
Parallelodon
Parallelodon (Meek and Worthen, 1866) is an extinct genus of parallelodontid arcoid bivalves, epifaunal byssate suspension feeders, ranging from the Ordovician to the Late Cretaceous with about one hundred named species.
Parallelogram
A parallelogram is a quadrilateral whose opposite sides are parallel, so opposite sides and angles are equal and diagonals bisect each other; squares, rectangles, and rhombuses are special cases.