All articles starting with K
16,083 articles
Kinetic bombardment
Kinetic bombardment, known as "rods from God" and originally called Thor, is a theoretical space-to-Earth weapon in which satellites drop dense metal rods at hypersonic speed.
Kinetic diameter
Kinetic diameter is the effective size a gas molecule presents to its surroundings, used to predict whether it can pass through the pores of molecular sieves such as zeolites.
Kinetic energy
Kinetic energy is the energy an object possesses because of its motion, given by K = ½mv² and measured in joules, the same unit as work.
Kinetic energy penetrator
A kinetic energy penetrator, also called a long-rod penetrator, is a non-explosive projectile of dense tungsten or depleted uranium that defeats armor by concentrating kinetic energy on a small area.
Kinetic energy recovery system
A kinetic energy recovery system (KERS) is a vehicle system that captures braking energy, stores it, and returns it to assist acceleration; the term was coined in Formula 1.
Kinetic exchange models of markets
Kinetic exchange models, or kinetic exchange models of markets, are agent-based econophysics models where agents exchange money in random pairwise transactions, yielding an exponential bulk and a Pareto rich tail.
Kinetic friction
Kinetic friction is the force that opposes the sliding of two surfaces in contact, equal to μk times the normal force by Amontons' 1699 law, and consistently lower than static friction.
Kinetic inductance detector
A kinetic inductance detector, or KID, is a superconducting photon detector in which absorbed radiation breaks Cooper pairs and shifts a resonator's frequency; the microwave variant was proposed in 2003.
Kinetic inductance parametric amplifier
A kinetic inductance parametric amplifier is a superconducting microwave amplifier that obtains gain from a superconducting thin film's current-dependent kinetic inductance rather than a Josephson junction.
Kinetic isotope effect
The kinetic isotope effect (KIE) is the change in a reaction's rate constant caused by isotopic substitution, arising from nuclear mass differences and widely used to establish reaction mechanisms.
Kinetic methods for determining organic reaction mechanisms
Kinetic methods determine organic reaction mechanisms by measuring how reaction rates depend on concentrations and temperature, then comparing the results with rate laws predicted by candidate mechanisms.
Kinetic Monte Carlo
Kinetic Monte Carlo (KMC) is a stochastic simulation method that models a system's temporal evolution by executing events like atomic jumps and reactions with probabilities proportional to their rate constants.
Kinetic resolution
Kinetic resolution separates the two enantiomers of a racemic compound by reacting them at different rates with a chiral catalyst, yielding up to 50% of one enantiomer.
Kinetic theory of gases
The kinetic theory of gases, also called the kinetic molecular theory, is a physical model explaining a gas's pressure, temperature, and viscosity through the constant random motion of its molecules.
Kinetics (dataset)
Kinetics is a family of large-scale video datasets for human action recognition created by Google DeepMind and first released in 2017, growing from 400 action classes to 700, with hundreds of thousands of 10-second YouTube clips.
Kinetik Holdings Inc.
Kinetik Holdings Inc. is an American midstream energy company serving the Delaware Basin in West Texas and New Mexico, formed in 2022 and headquartered in Houston and Midland.
Kinetin
Kinetin, also known as N6-furfuryladenine, is a plant growth substance of the cytokinin class, first isolated from degraded DNA in 1955 and used in plant tissue culture.
Kinetix AI (超维动力)
Kinetix AI (超维动力) is a Chinese embodied-intelligence startup in Shenzhen, founded in 2025 by Yu Jie, Luo Ping, and Zheng Cunyuan, which raised over RMB 500 million in 2026.
Kineto-elastodynamics
Kineto-elastodynamics (KED) is a branch of mechanism and robot dynamics that analyzes moving mechanisms and manipulators with elastic deformations of flexible links, developed from the early 1970s for high-speed machinery.
Kinetocardiography
Kinetocardiography (KCG), also indexed as vibrocardiography and apex cardiography, is the graphic recording of low-frequency (0-30 Hz) chest wall movements caused by cardiac impulses, introduced by Eddleman in 1953.
Kinetochore
Kinetochore: proteinaceous structure on each centromere linking chromosomal DNA to spindle microtubules; built on CENP-A nucleosomes with KMN outer core; drives checkpoint signaling, force generation, and error correction during chromosome segregation.
Kinetochore Mis14/Nsl1
Kinetochore Mis14/Nsl1 (NSL1, DC8, C1orf48) is a conserved kinetochore protein family and Mis12/MIND complex subunit that scaffolds KNL1 and Ndc80 binding and recruits HP1 to the inner centromere.
Kinetochore protein Nuf2, N-terminal
Kinetochore protein Nuf2, N-terminal (Pfam PF03800, InterPro IPR005549) is the conserved calponin homology domain of Nuf2, an Ndc80 kinetochore complex subunit that binds spindle microtubules, enables chromosome segregation, and supports ribosome biogenesis.
Kinetoplastid RNA editing
Kinetoplastid RNA editing is a post-transcriptional process in the mitochondria of trypanosomes and Leishmania, in which guide RNAs direct insertion and deletion of hundreds of uridines to convert untranslatable transcripts into mature mRNAs.
Kinetoscope
Kinetoscope: Edison and W.K.L. Dickson's 1891 peephole motion-picture viewer, nickel-in-the-slot, 35mm continuous film loop, first parlor New York April 14, 1894; superseded by projection.
KinetX Aerospace
KinetX Aerospace is a Phoenix-area, Arizona aerospace company, the first private company qualified by NASA for deep-space navigation, serving missions such as MESSENGER, New Horizons, and OSIRIS-REx.
Kinexon
Kinexon is a Munich-based IoT company, founded in 2012 as a spin-out of the Technical University of Munich, selling ultra-wideband tracking hardware and software for industry and sport.
King
King: a male monarch, hereditary or elected head of a monarchical state. About 43 countries retain monarchies, spanning absolute rule (Saudi Arabia, Eswatini), constitutional crowns (UK, Sweden), and elective monarchy (Vatican City).
King (2008 film)
King (కింగ్) is a 2008 Telugu action comedy directed by Sreenu Vaitla, starring Nagarjuna Akkineni in a triple role as a royal heir, gangster Bottu Seenu, and engineer Sarath, with Trisha, Srihari, and Mamta Mohandas; released 25 December 2008 by Kamakshi Kala Movies.
King (2026 film)
King (2026) is an upcoming Hindi action film directed by Siddharth Anand, starring Shah Rukh Khan with Suhana Khan, Deepika Padukone, and Abhishek Bachchan; produced by Red Chillies Entertainment and Marflix Pictures, releasing 24 December 2026.