All articles starting with L
25,375 articles
LIGHT trial
LIGHT trial (NCT07325539): Phase II, open-label, single-arm study at Sun Yat-sen University testing low-dose radiotherapy (0.5 Gy x 4 fractions per cycle) added to toripalimab plus gemcitabine-cisplatin for recurrent/metastatic nasopharyngeal carcinoma; 55 participants, primary endpoint PFS by RECIST 1.1.
Light tube (daylighting)
A light tube, also called a tubular daylighting device or tubular skylight, is a passive device that carries daylight from a roof dome through a reflective tube into a room.
Light well
A light well is a vertical shaft within or beside a building, open to the sky or skylight-roofed, that delivers daylight to interior spaces windows cannot reach.
Light welterweight
Light welterweight (junior welterweight, super lightweight) is a professional boxing division with a 140 lb (63.5 kg) limit, created by the 1920 Walker Law, first champion Pinky Mitchell in 1922.
Light Yagami (夜神月)
Light Yagami (夜神月), also known as Kira, is the protagonist of Tsugumi Ohba and Takeshi Obata's Death Note manga, an ace student who kills criminals with the Shinigami notebook and is hunted by detective L.
Light Years Beyond (光年之外)
Light Years Beyond (光年之外) was a Chinese AI startup founded in 2023 by Meituan co-founder Wang Huiwen to build AGI, and was acquired by Meituan within four months.
Light-activated active nematics
Light-activated active nematics are active nematic liquid crystalline materials whose activity can be switched or patterned by light, typically microtubule films driven by kinesin motors that assemble only under blue light.
Light-activated shape memory polymers
Light-activated shape memory polymers (LASMPs) are shape memory polymers whose temporary shape recovers to the permanent shape under light, by photochemical switching or embedded photothermal fillers.
Light-cone coordinates
Light-cone coordinates, also called null or light-front coordinates, are coordinates on spacetime defined along the directions light travels, turning boosts into simple rescalings and underpinning Dirac's 1949 front form of dynamics.
Light-Curing of Dental Adhesives
Light-curing of dental adhesives: photopolymerization of resin bonding materials using dental light-curing units (QTH, LED, plasma arc), camphorquinone photoinitiators at ~465 nm, radiant exposure, and blue-light safety.
Light-dependent reactions
Light-dependent reactions: first stage of photosynthesis in thylakoid membranes, where photosystems I and II convert light to ATP and NADPH, split water via the Mn4CaO5 oxygen-evolving complex, and release oxygen; also called photophosphorylation.
Light-dragging effects
Light-dragging effects are phenomena in which a moving medium or rotating mass partially carries light, or spacetime, along with it: the Fresnel–Fizeau drag in moving water and the gravitational frame-dragging (Lense–Thirring) effect of general relativity.
Light-driven molecular motor
A light-driven molecular motor is a synthetic molecule that converts absorbed light into continuous, directionally controlled rotation, first demonstrated in 1999 by Ben Feringa and co-workers.
Light-driven rotary molecular motors in liquid crystal networks
Light-driven rotary molecular motors in liquid crystal networks are synthetic molecules that rotate unidirectionally under light inside liquid-crystal films, turning nanoscale motion into macroscopic work.
Light-emitting diode
A light-emitting diode (LED) is a semiconductor device that emits light when current passes through it; the first practical visible LED was made by Nick Holonyak Jr. in 1962.
Light-front quantization
Light-front quantization is a quantum field theory method in which fields are quantized at fixed light-cone time, allowing relativistic bound states like hadrons to be computed directly in Minkowski space.
Light-front quark model
The light-front quark model (LFQM) is a relativistic quark model that quantizes hadrons on the light front, computing decay constants, form factors, and parton distributions for mesons.
Light-gas gun
A light-gas gun is a laboratory launcher that uses compressed hydrogen or helium to accelerate small projectiles to hypervelocities of 2 to 9 km/s, simulating orbital debris impacts.
Light-induced conical intersections
A light-induced conical intersection (LICI) is a degeneracy between two laser-dressed electronic states of a molecule, created by resonant light, with position set by laser frequency and coupling strength by intensity.
Light-induced degradation
Light-induced degradation (LID) is a loss of conversion efficiency in crystalline silicon solar cells under illumination, mainly from a boron-oxygen defect, costing up to about 2% efficiency.
Light-induced superconductivity
Light-induced superconductivity, or photoinduced superconductivity, is the phenomenon in which intense mid-infrared or terahertz laser pulses drive a material into a transient superconducting-like state above its equilibrium transition temperature.
Light-shining-through-walls experiments
Light-shining-through-walls experiments are laboratory searches for axion-like particles and hidden photons, converting laser photons in a magnetic field and regenerating them behind an opaque barrier.
Light-sport aircraft
A light-sport aircraft (LSA) is a United States category of small, simple aircraft certificated by the FAA against industry consensus standards rather than full type certification, created in 2004.
Light-weight Linux distribution
A light-weight Linux distribution, also called a lightweight Linux distro, is built to run on little memory, disk space, and processing power, suiting old hardware.
Light-year
A light-year is a unit of distance equal to how far light travels in one year, about 5.88 trillion miles, used by astronomers for interstellar distances.
Light-Years (Nas and DJ Premier album)
Light-Years (stylized Light-Years) is the debut collaborative album by rapper Nas and producer DJ Premier, released December 12, 2025 on Mass Appeal as the final entry in the Legend Has It series; 15 tracks, 48 minutes, Metascore 71.
LightBay Capital
LightBay Capital is a Los Angeles private equity firm founded by Nav Rahemtulla and Adam Stein, ex-Ares, investing in middle-market healthcare, consumer, and business services companies.
Lightbay Investment Partners
Lightbay Investment Partners, known as LightBay Capital, is a Los Angeles private equity firm founded in 2016 by Nav Rahemtulla and Adam Stein, formerly of Ares Management.
Lightbits Labs
Lightbits Labs is a private software-defined storage company founded in 2016, headquartered in San Jose, California, that builds disaggregated NVMe over TCP block storage software, shipping LightOS.
Lightbridge (company)
Lightbridge Corporation, formerly Thorium Power, is an American nuclear fuel technology company in Reston, Virginia, developing a helical-cruciform metallic uranium-zirconium fuel for existing light water reactors and small modular reactors.