edgepedia

Technology and the built world

61,984 articles

eBee

The eBee is a family of hand-launched fixed-wing survey drones made by Swiss company senseFly, now owned by AgEagle, with over a million flights worldwide.

Ebenezer Howard

Ebenezer Howard (1850–1928) was a British shorthand-writer and reformer who founded the garden city movement through his 1898 book To-morrow, influencing the new towns of Letchworth and Welwyn.

Eberbach Abbey

Eberbach Abbey (Kloster Eberbach) is a former Cistercian monastery near Eltville am Rhein in the Rheingau, Germany, founded in 1136 by monks from Clairvaux and dissolved in 1803.

Eberhardt Rechtin

Eberhardt Rechtin (1926–2006) was an American electrical engineer who directed NASA's Deep Space Network, proved the phase-locked loop optimal in noise, and founded systems architecting programs at USC.

EBN (Dutch gas company)

EBN, or Energie Beheer Nederland, is the Netherlands' 100 percent state-owned energy company, participating in oil and gas production, gas storage, CO₂ storage, and geothermal energy.

Ebony

Ebony, also known as hebenus, is a dense, fine-grained black tropical wood produced mainly by Diospyros trees, traded since antiquity and prized for furniture and instrument fingerboards.

ebookers

ebookers is a European online travel agency founded in 1999 as the internet arm of Flightbookers and now owned by Expedia Group, which is retiring the brand in 2026.

eBPF

eBPF, the extended Berkeley Packet Filter, is a technology from the Linux kernel that safely runs sandboxed programs at kernel hooks for networking, tracing, security, and observability.

EBRC Jaguar

The EBRC Jaguar (Engin Blindé de Reconnaissance et de Combat) is a French 6x6 armored reconnaissance vehicle built by KNDS, Arquus, and Thales under the Scorpion program.

Ebro (Chery)

Ebro is a Spanish automobile marque revived in 2024 by Barcelona's EV Motors in alliance with China's Chery, building SUVs at the former Nissan plant in Barcelona.

EC-Council Certified Security Analyst

EC-Council Certified Security Analyst (ECSA) is a mid-level penetration testing certification from EC-Council that follows Certified Ethical Hacker and teaches a structured penetration testing methodology.

eCall

eCall is an in-vehicle emergency call system that automatically dials 112 after a severe accident, transmitting the vehicle's location and opening a voice link to responders.

ECC memory

ECC memory, or error-correcting code memory, is computer memory that stores extra check bits to detect and correct data corruption automatically, standard on servers and workstations.

Eccentric cam

An eccentric cam is a circular plate cam with its rotating shaft mounted off-center, giving the follower simple harmonic motion with a stroke of twice the eccentricity.

Eccentrically braced frame

An eccentrically braced frame (EBF) is a steel seismic-force-resisting system in which braces connect to a beam off-center, creating a short link that yields to dissipate earthquake energy.

ECD Ovonics

ECD Ovonics was the trade name of Energy Conversion Devices, an American materials science company founded in Detroit in 1960 by Stanford Ovshinsky, inventor of the Ovonic nickel-metal hydride battery.

ECHELON

ECHELON, also known as Project ECHELON, was a global signals intelligence system under the UKUSA agreement that intercepted satellite communications and filtered them by keyword searches.

Echizen washi

Echizen washi (越前和紙) is traditional Japanese paper made in Echizen City, Fukui Prefecture, ranked among Japan's three great washi traditions with about 1,500 years of history.

Echo canceller

An echo canceller is a signal processing device that estimates echo in a communication channel with an adaptive filter and subtracts it in real time, without interrupting transmission.

Echo Chamber (jailbreak technique)

Echo Chamber is a multi-turn jailbreak technique against large language models, disclosed in June 2025 by the AI security company NeuralTrust after routine adversarial testing.

Echo Global Logistics

Echo Global Logistics is a Chicago-based third-party logistics company founded in 2005 by Brad Keywell and Eric Lefkofsky, connecting shippers with a network of more than 50,000 carriers.

Echo sounder

An echo sounder is an active sonar instrument that measures water depth by timing an acoustic pulse's return from the seafloor, replacing the lead line in the early twentieth century.

Echo state network

An echo state network (ESN) is a recurrent neural network architecture introduced by Herbert Jaeger in 2001, in which only the readout connections are trained.

Echo suppressor

An echo suppressor is a voice-operated switching device on long-distance telephone circuits that blocks the return path so speakers cannot hear their own echo, developed by Bell System in 1925.

EchoStar

EchoStar Corporation is an American telecommunications company headquartered in Englewood, Colorado, whose brands include Boost Mobile, DISH TV, Sling TV, Hughes, and HughesNet satellite internet.

EchoStar XXIV

EchoStar XXIV, marketed as JUPITER 3, is a geostationary communications satellite built by Maxar for Hughes, launched by SpaceX in 2023 to deliver broadband across the Americas.

Eckehard Schöll

Eckehard Schöll (born 1951 in Stuttgart) is a German theoretical physicist known for nonlinear dynamics and chimera states, and a professor at TU Berlin from 1989 to 2019.

Eclairion

Eclairion is a French operator of high-density colocation data centers for AI, based in Bruyères-le-Châtel near Paris and known for hosting Mistral AI's training cluster.

Eclipse (software)

Eclipse, also known as Eclipse IDE, is a free, open-source integrated development environment created by IBM in 2001, now governed by the Eclipse Foundation and best known for Java development.

Eclipse (yacht)

Eclipse, also known as M/Y Eclipse, is a 162.5-meter motor yacht built by Blohm+Voss in Hamburg and delivered in 2010 to Roman Abramovich; she was then the world's largest private yacht.