All articles starting with I

Impeachment: American Crime Story

Impeachment: American Crime Story is FX's third American Crime Story season (2021), a 10-episode dramatization of the Clinton–Lewinsky scandal based on Jeffrey Toobin's A Vast Conspiracy, produced with Monica Lewinsky, starring Beanie Feldstein, Sarah Paulson, and Clive Owen.

Impedance analyzer

An impedance analyzer is an electronic test instrument that measures the complex impedance of components, circuits, or materials across a swept frequency range, displaying results graphically.

Impedance cardiography

Impedance cardiography, also called thoracic electrical bioimpedance, is a noninvasive method that estimates stroke volume, cardiac output, and related hemodynamic parameters from changes in the electrical impedance of the chest.

Impedance control

Impedance control is a robot interaction-control strategy, introduced by Neville Hogan of MIT in 1984, that gives a robot's end point a chosen mechanical behavior such as mass-spring-damper dynamics.

Impedance cytometry

Impedance cytometry is a label-free flow cytometry technique that measures the electrical impedance of individual cells passing through a microfluidic aperture, quantifying cell size and dielectric properties without stains or optics.

Impedance manometry

Impedance manometry is a diagnostic technique that combines manometry with electrical impedance on a single catheter. It is used to evaluate dysphagia and reflux disease.

Impedance matching

Impedance matching, also called a matching network, is a central RF and microwave design task that maximizes power transfer or minimizes signal reflection between a source and a load.

Impedance microscopy

Impedance microscopy is a family of scanning probe techniques that maps local electrical impedance, spanning low-frequency contact methods and microwave variants such as MIM and sMIM.

Impedance myography

Impedance myography, also known as electrical impedance myography, is a noninvasive technique that passes a small electrical current through muscle to assess neuromuscular disease severity.

Impedance of free space

The impedance of free space, also called the vacuum impedance, is the ratio of electric to magnetic field strength in a wave traveling through vacuum, about 377 ohms.

Impedance planimetry

Impedance planimetry is a diagnostic technique measuring cross-sectional area and pressure inside a hollow GI lumen to assess wall distensibility, best known through the EndoFLIP system used during endoscopy and foregut surgery.

Oct 21, 2026

Impedance Plethysmography

Impedance plethysmography, also known as rheography or impedance phlebography, is a noninvasive technique that measures blood volume changes through electrical impedance between electrodes on the skin.

Impedance tube

An impedance tube, also called a Kundt's tube or standing wave tube, is a rigid duct used to measure the normal-incidence sound absorption of small material specimens.

Impedance-based fault detection

Impedance-based fault detection, known in practice as distance protection, is a power system protection method that infers a fault's presence, direction, and location from apparent impedance at the relay.

Impedance-based fault location

Impedance-based fault location is the technique of finding where a short-circuit fault lies on a power line by converting measured voltage and current at the line terminals into a distance.

Impedimetric detection

Impedimetric detection is a label-free electrochemical sensing method that measures analyte binding as changes in electrode impedance, run in faradaic or non-faradaic modes and suited to low-cost point-of-care diagnostics.

Impella

Impella: Abiomed's catheter-mounted microaxial heart pump, first used 1999 in Belgium, over 330,000 patients treated; unloads the left ventricle for high-risk PCI and cardiogenic shock, distinct from balloon pumps and ECMO.

Impeller

An impeller is the rotating, vaned component of a pump, compressor, or water turbine that transfers energy from the drive shaft to a fluid, raising its velocity and pressure.

Sep 19, 2026

Impending Doom

Impending Doom is an American deathcore band from Riverside, California, formed in 2005, known for combining extreme metal brutality with Christian lyrics, a style the band calls "gorship."

Impenitent thief

Impenitent thief, traditionally named Gestas or Gesmas, is the unnamed criminal crucified at Jesus's left who mocked him (Luke 23:39-43); the name comes from the 4th-century Gospel of Nicodemus, not the Bible.

Impera

Impera (IMPERA) is the fifth studio album by Swedish band Ghost, released March 11, 2022 on Loma Vista. A 12-track concept album on the rise and fall of empires, produced by Klas Åhlund, it scored 84 on Metacritic and topped the US album chart.

Oct 21, 2026

Imperata cylindrica

Imperata cylindrica, cogongrass or alang-alang, is a rhizomatous Poaceae grass, one of the world's worst weeds, covering about 2,000,000 km2 in the tropics, yet used for thatch, rope, paper, and traditional medicine.

Imperative Care

Imperative Care is a private medical technology company in Campbell, California, founded in 2015 by Nick Hopkins and Fred Khosravi, that makes catheter-based clot removal devices for stroke.

Imperative mood

The imperative mood is the grammatical mood for directive speech acts such as commands, requests, and prohibitions. Also called the command form; in English it uses the bare verb base with no subject and don't for negatives, and crosslinguistically it shows reduced agreement and special prohibitive strategies.

Imperative programming

Imperative programming, also known as the imperative paradigm, is a programming paradigm where a program is a sequence of statements that change program state, in contrast to declarative programming.

Imperator

Imperator, Latin "commander", was a Roman honorific saluted to victorious generals, first recorded for Scipio in Iberia, later the emperor's praenomen and root of "emperor".

Imperator Furiosa

Imperator Furiosa, also Furiosa, the one-armed War Rig captain of Mad Max: Fury Road played by Charlize Theron, portrayed younger by Anya Taylor-Joy and Alyla Browne in the 2024 prequel Furiosa: A Mad Max Saga.

Imperator: Rome

Imperator: Rome is a 2019 Paradox Development Studio grand strategy game set after Alexander the Great's death, spanning Iberia to Tibet, with pops, characters, and trade; reworked by the 2.0 Marius update and later community patches.

Oct 20, 2026

Imperatriz

Imperatriz, Maranhão, Brazil: second largest city of Maranhão, founded 16 July 1852 by Frei Manoel Procópio, on the Tocantins River; hub of southwestern Maranhão, northern Tocantins, and southern Pará.