61,984 articles
Jesse V. Jokerst
Jesse V. Jokerst is an American biomedical engineer and analytical chemist who leads the Jokerst Bioimaging Lab at UC San Diego, working on photoacoustic imaging and nanomedicine.
Jessica Cox
Jessica Cox, born 1983, is an American motivational speaker, pilot, and disability rights advocate who became the first licensed armless airplane pilot, earning her certificate in 2008.
Jessica Dubroff
Jessica Dubroff, also known as Jessica Whitney Dubroff, was a seven-year-old American girl who died in a 1996 plane crash near Cheyenne, Wyoming, during a cross-country record flight attempt.
Jessica Livingston
Jessica Livingston is an American startup investor and writer who co-founded the startup accelerator Y Combinator in 2005 and wrote the bestselling interview collection Founders at Work (2007).
Jessica Rosenworcel
Jessica Rosenworcel is an American communications lawyer who served as an FCC commissioner from 2012 and as the agency's first Senate-confirmed woman chair until 2025.
Jessika E. Trancik
Jessika E. Trancik is an MIT professor at the Institute for Data, Systems, and Society who studies energy technology costs and performance to inform climate policy and clean-energy investment.
Jest (JavaScript framework)
Jest is a JavaScript testing framework running on Node.js, created at Facebook in 2011 and now owned by the OpenJS Foundation, with mocking, snapshot testing, and coverage built in.
Jesus nut
The Jesus nut, or Jesus bolt, is the aviation slang name for the single large fastener that holds a helicopter's main rotor to the mast; its failure would detach the rotor in flight.
Jet A
Jet A is a kerosene-based jet fuel specified in ASTM D1655 and the grade most prevalent in the United States, with a freezing point of −40 °C.
Jet Age
The Jet Age, also called the jet era, is the aviation period beginning in the late 1950s when jet airliners replaced piston-engine planes, starting with the Boeing 707.
Jet aircraft
A jet aircraft is an airplane propelled by jet engines, which generate thrust by accelerating hot gas rearward instead of turning a propeller; the type dominates commercial aviation.
Jet airliner
A jet airliner, also called a jetliner, is a fixed-wing commercial passenger airplane powered by turbojet or turbofan engines, pioneered by the de Havilland Comet in 1952.
Jet Airways
Jet Airways was an Indian full-service airline founded by Naresh Goyal that operated from 1993 to 2019, once India's largest private carrier before collapsing under debt.
Jet bridge
A jet bridge, also called a jetway, is an enclosed, movable walkway connecting an airport terminal gate to an aircraft door, letting passengers board sheltered from weather and ramp hazards.
Jet card
A jet card is a prepaid private aviation program where customers buy flight hours at a fixed rate with guaranteed availability, offered by more than 60 providers.
Jet engine
A jet engine is a reaction engine that generates thrust by ejecting a jet of fluid; air-breathing gas-turbine types power nearly all modern high-speed passenger and military aircraft.
Jet engine ingestion
Jet engine ingestion is the entry of birds, rain, hail, ice crystals, sand, or debris into an aircraft turbine engine, potentially damaging blades or causing thrust loss.
Jet fighter generations
Jet fighter generations, also called generations of jet fighter, are a classification scheme grouping jet fighters by the dominant technologies of each era, from mid-1940s subsonic aircraft to fifth-generation stealth fighters like the F-22.
Jet fuel
Jet fuel, also known as aviation turbine fuel or Jet A-1, is a kerosene-based petroleum product burned in aircraft gas turbine engines, with civil grades Jet A and Jet A-1.
Jet grouting
Jet grouting is a ground improvement technique in which grout injected through high-pressure nozzles erodes and mixes with in-place soil, forming soil-cement columns or panels.
Jet lag
Jet lag, also called jet lag disorder or jet lag syndrome, is a temporary circadian rhythm sleep disorder from rapid travel across time zones, causing insomnia and daytime sleepiness.
Jet pack
A jet pack, also known as a rocket belt or rocket pack, is a back-mounted device generating vertical thrust for personal flight, first flown by Bell in 1960.
Jet pipe servo valve
A jet pipe servo valve is a two-stage electrohydraulic flow control valve in which a torque motor deflects a fluid jet to position the main spool, with high contamination tolerance.
Jet Propulsion Laboratory
The Jet Propulsion Laboratory, or JPL, is a federally funded research center in Pasadena, California, managed by Caltech for NASA since 1958 and known for robotic space missions, including all five successful Mars rovers.
Jet vapor deposition
Jet vapor deposition (JVD) is a thin-film deposition method in which a high-velocity inert-gas jet transports vaporized material onto a substrate, working at low vacuum rather than in a high-vacuum chamber.
Jet.com
Jet.com was an American e-commerce startup founded by Marc Lore, launched in 2015 as a low-priced challenger to Amazon, acquired by Walmart in 2016 for $3.3 billion, and shut down in 2020.
Jet2.com
Jet2.com is a British leisure airline headquartered in Leeds, England. It is the UK's third largest airline and has been a Which? Recommended Provider for ten consecutive years.
JetBlue
JetBlue Airways Corporation is an American low-cost airline headquartered in New York City. Founded by David Neeleman, it began flying in 2000 and serves more than 100 destinations.
JetBlue Flight 292
JetBlue Flight 292 was a 2005 domestic flight that landed safely at Los Angeles with its nose gear turned 90 degrees; none of the 146 aboard was hurt.
JetBlue flight attendant incident
The JetBlue flight attendant incident, best known as the Steven Slater air rage incident, refers to the 2010 quit-by-emergency-slide episode and later JetBlue crew incidents.