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Erosive burning
Erosive burning is the increase in a solid propellant's burning rate caused by high-velocity combustion gas flowing parallel to the surface, typically at the aft end of a rocket motor's grain.
Erotic electrostimulation
Erotic electrostimulation (e-stim, estim, electroplay, electrosex) applies controlled electrical current via TENS/EMS-style control units and electrodes for sexual pleasure; safe practice avoids chest, head, pacemakers, and epilepsy, using purpose-built low-voltage equipment.
Erotic furniture
Erotic furniture, also called sex furniture, is furniture designed to support the body during sexual activity, from wedges and ramps to swings and bondage benches.
Erratic Robot
The Erratic is a differential-drive mobile robot platform built by Videre Design and developed by Kurt Konolige, inventor of the Pioneer robots, used widely in research.
Erroll Brown Davis Jr.
Erroll Brown Davis Jr. was an American electrical engineer and executive who led Alliant Energy and served as the first African American chancellor of the University System of Georgia.
Error analysis for the Global Positioning System
Error analysis for the Global Positioning System identifies and mitigates the sources separating a GPS receiver's computed position from its true position, including atmospheric delays, satellite clock and ephemeris errors, and multipath.
Error budgets
An error budget is the permitted amount of failure for a service over a period, calculated as one minus its service level objective; the concept comes from Google's site reliability engineering.
Error correction code
An error correction code (ECC) is a method that adds redundancy to data so errors from storage or transmission are detected and corrected without retransmission.
Error detection and correction
Error detection and correction (ECC), also called error control, is the set of techniques by which digital systems add redundancy to detect corrupted data and often repair it.
Error-driven learning
Error-driven learning adjusts a model's parameters in proportion to the difference between its predictions and observed outcomes, spanning supervised learning, reinforcement learning, and brain plasticity models.
ERS (satellite)
ERS (European Remote Sensing) was a pair of Earth observation satellites flown by the European Space Agency from 1991 to 2011, carrying synthetic aperture radar to study land, oceans, and ice.
ERS-1
ERS-1 (European Remote-Sensing Satellite 1) was the European Space Agency's first Earth observation satellite, a radar-carrying spacecraft launched from Kourou in 1991 that operated until 2000.
ERS-2
ERS-2 (European Remote Sensing satellite 2) was an ESA Earth-observation satellite launched in 1995, designed for three years but serving more than 16 before reentering in 2024.
Ersel A. Evans
Ersel A. Evans was an American metallurgical and materials engineer at the Hanford site in Washington State, known for reactor fuel work and a 1961 fuel assembly patent.
Erskine Oil and Gas Field
Erskine is a high-pressure, high-temperature gas condensate field in the UK Central North Sea about 150 miles north-east of Aberdeen, the first HPHT field developed on the UK Continental Shelf.
Ertan hydroelectric plant
The Ertan hydroelectric plant (雅砻江二滩水电站) is a 3,300 MW hydroelectric station on the Yalong River in Sichuan, China, once the country's largest before Three Gorges.
Ertl Company
The Ertl Company is an American die-cast toy manufacturer founded by Fred Ertl Sr. in 1945 in Dubuque, Iowa, best known for its John Deere farm toy tractors.
erwin Data Modeler
erwin Data Modeler (erwin DM) is a data modeling tool sold by Quest Software that designs conceptual, logical, and physical data models and generates database schemas from them.
ESAB
ESAB (Elektriska Svetsnings Aktiebolaget) is a Swedish-founded manufacturer of welding and cutting equipment and consumables, established in Gothenburg in 1904 by Oscar Kjellberg, inventor of the coated welding electrode.
Esah Oil and Gas Field
The Esah Oil and Gas Field is an offshore Mexican oil field in the Sonda de Campeche, discovered by Pemex's Esah-1 well in 2015, with 2P reserves of 43 million barrels.
ESATA
eSATA, short for External Serial Advanced Technology Attachment, is an external variant of the SATA storage interface released in 2004, letting external hard drives run at internal-drive speeds over shielded cables up to 2 meters long.
ESATAp
ESATAp (Power over eSATA), also called Power eSATA or eSATA USB Hybrid Port, is a connector combining eSATA data with USB power in one socket, announced by SATA-IO in 2008.
ESB Group
ESB Group, also known as the Electricity Supply Board (Bord Soláthair an Leictreachais), is Ireland's state-owned electricity utility. Established in 1927, it operates generation, networks, and supply across Ireland and Great Britain.
esbuild
esbuild is an open-source JavaScript bundler and minifier written in Go by Evan Wallace, released in 2020 and known for being 10 to 100 times faster.
ESCALAB
ESCALAB most commonly refers to the Extreme Scale Computer Architecture Laboratory (ESCAL), a computer architecture research group at the University of California, Riverside led by Hung-Wei Tseng.
Escalator
An escalator, also known as a moving staircase or moving stairway, is a power-driven set of moving stairs that continuously carries standing passengers between the levels of a building.
ESCAPADE
ESCAPADE (Escape and Plasma Acceleration and Dynamics Explorers) is a NASA mission with twin spacecraft, Blue and Gold, launched in 2025 to study how solar wind drives atmospheric loss at Mars.
Escape analysis
Escape analysis is a static compiler analysis that decides whether an object escapes the function that created it, enabling stack allocation, lock elision, and scalar replacement.
Escape character
An escape character is a metacharacter that suspends the usual interpretation of the characters that follow it, used in string literals, regular expressions, shells, and terminals, usually as the backslash.
Escape from Planet Earth
Escape from Planet Earth is a 2013 Canadian-American computer-animated science fiction comedy film directed by Cal Brunker. It stars Brendan Fraser and was the first feature film of Rainmaker Entertainment.