All articles starting with I
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Ignition coil
An ignition coil, or spark coil, is a pulse transformer that converts a low-voltage battery supply into the 10,000 to 30,000 volts needed to fire a spark plug.
Ignition delay
Ignition delay is the time between fuel injection and the start of combustion in a diesel engine, typically about 0.5 ms, controlling noise and NOx emissions.
Ignition interlock device
An ignition interlock device is a breath-test unit installed in a vehicle that blocks the engine from starting if the driver's breath shows alcohol above a set limit.
Ignition magneto
An ignition magneto, or high-tension magneto, is a generator that fires a spark plug without a battery, once common in cars and standard on piston aircraft engines.
Ignition system
An ignition system is the assembly of components that initiates combustion in an internal combustion engine, using a high-voltage spark in petrol engines and compression ignition in diesels.
Ignition timing
Ignition timing is the crankshaft angle at which the spark plug fires in a spark-ignition engine, expressed in degrees before or after top dead center.
IGNITOR
IGNITOR is a compact, high-magnetic-field tokamak designed by MIT's Bruno Coppi to reach ignition in deuterium-tritium plasma without external heating, built as an Italian-Russian project.
Ignorance
Ignorance: the lack of knowledge or true belief, studied across epistemology (Standard, New, and Normative views), agnotology, deliberate and willful ignorance, formal logic, and statistics.
Ignorance Is Chris
Ignorance Is Chris is the sixth episode of the second season of Peacemaker, released in 2025. It features a major twist revealing an alternate universe where Nazi Germany won World War II.
Ignorantia juris non excusat
Ignorantia juris non excusat, also ignorantia legis non excusat, is the Latin maxim that ignorance of the law does not excuse, rooted in Roman law and expressed in codes such as Spain's Civil Code Article 6.1, with limited mistake-of-law exceptions.
Ignyta, Inc.
Ignyta, Inc. was a San Diego precision-oncology biotechnology company founded in 2011. Its lead drug was entrectinib, and Roche agreed to acquire it for $1.7 billion in 2017.
IGO Limited
IGO Limited, formerly Independence Gold NL and listed on the ASX since 2002, is an Australian mining company in South Perth focused on nickel, lithium, and copper battery minerals.
Igor (album)
IGOR (2019) is Tyler, The Creator's fifth solo album on Columbia, a 12-track, 39-minute breakup concept record sung more than rapped, with guests Playboi Carti, Charlie Wilson, and Kanye West; it debuted at US number one and won the 2020 Grammy for Best Rap Album.
Igor (character)
Igor (or Ygor) is the stock hunchbacked assistant of Frankenstein fiction, absent from Shelley's novel. Fritz came from the 1823 play Presumption and the 1931 film; Lugosi's Ygor (1939) supplied the name; Marty Feldman's Young Frankenstein (1974) fixed the archetype.
Igor (film)
Igor is a 2008 computer-animated comedy film directed by Tony Leondis, about a hunchbacked lab assistant in the kingdom of Malaria who dreams of becoming a mad scientist.
Igor A. Abrikosov
Igor A. Abrikosov (Абрикосов, Игорь Анатольевич) is a Russian-born theoretical physicist, professor of theoretical physics at Linköping University since 2003, known for simulating materials under extreme pressures.
Igor Adameyko
Igor Adameyko (Игорь Адамейко) is a developmental biologist who is professor and department chair at the Medical University of Vienna and leads a group at Karolinska Institutet.
Igor Aharonovich
Igor Aharonovich is an Australian-based physicist and professor at the University of Technology Sydney who leads a quantum nanophotonics laboratory studying single-photon emitters in wide-bandgap materials.
Igor Akinfeev (Игорь Владимирович Акинфеев)
Igor Akinfeev (Игорь Владимирович Акинфеев), born 1986, is a Russian goalkeeper and captain of CSKA Moscow, his only club since 2003. Six-time Russian champion, UEFA Cup winner, 111 caps for Russia, 2018 World Cup penalty hero against Spain.
Igor and Grichka Bogdanoff
Igor and Grichka Bogdanoff (Bogdanov), French identical twins born 1949, hosted the first French science-fiction TV show Temps X on TF1 from 1979, wrote science best-sellers, and died of Covid-19 six days apart, 28 December 2021 and 3 January 2022, unvaccinated, aged 72.
Igor B. Dawid
Igor B. Dawid (1935–2024) was an American molecular and developmental biologist at Carnegie and NIH known for showing that extra DNA in frog eggs is mitochondrial DNA.
Igor B. Roninson
Igor B. Roninson is a cancer researcher known for cloning the mdr1 multidrug resistance gene and discovering the first selective CDK8/19 inhibitors, retiring in 2026 as professor emeritus at the University of South Carolina.
Igor Babuschkin
Igor Babuschkin is a physicist-turned-AI engineer who co-founded xAI with Elon Musk in 2023, helping build Grok and the Colossus supercomputer, before founding Babuschkin Ventures and River AI.
Igor Boldin
Igor Boldin (Игорь Петрович Болдин), born 1964, Russian ice hockey forward; 1992 Olympic gold with the Unified Team; longtime Spartak Moskva player, later Spartak coach; drafted by St. Louis Blues 1992.
Igor Bray
Igor Bray is an Australian atomic and molecular collision physicist known for the convergent close-coupling method for electron-atom scattering, and Head of Physics and Astronomy at Curtin University since 2010.
Igor Bukhman
Igor Bukhman is a Russian-born technology entrepreneur who co-founded Playrix, the Dublin-based mobile games company behind Gardenscapes and Fishdom, with his brother Dmitry in 2004.
Igor Cassina
Igor Cassina, born 1977 in Seregno, is an Italian gymnast, 2004 Athens Olympic gold medalist on horizontal bar (9.812). The FIG named his Kovacs-plus-full-twist release skill the Cassina, a G-difficulty element.
Igor Cavalera
Igor (Iggor) Graziano Cavalera, born 1970 in Belo Horizonte, Brazilian drummer who co-founded Sepultura in 1984, played on Roots (Billboard 200 No. 3), left in 2006, and now records with Cavalera Conspiracy, Mixhell, Soulwax, and Petbrick.
Igor Červený
Igor Červený (born 1984) is a Czech politician of the Motorists for Themselves party who serves as Minister of the Environment of the Czech Republic.
Igor Cherepinsky
Igor Cherepinsky is a Ukrainian-born American aerospace engineer who directs Sikorsky Innovations, works on rotorcraft autonomy and flight controls, and joined the National Academy of Engineering in 2025.