All articles starting with E
17,681 articles
Echo (Marvel Comics)
Echo (Maya Lopez) is a Marvel Comics superhero created by David Mack and Joe Quesada in Daredevil #9 (1999): a Deaf Cheyenne warrior with photographic reflexes, the first Ronin, Phoenix Force host, and MCU character played by Alaqua Cox.
Echo (miniseries)
Echo (2024) is a five-episode Marvel Studios miniseries on Disney+ and Hulu, a Hawkeye spin-off starring Alaqua Cox as deaf Choctaw hero Maya Lopez pursued by Kingpin; the first Marvel Spotlight and TV-MA Marvel series.
Echo (mythology)
Echo (Greek Ἠχώ, Ekho) is the Oread nymph of Mount Kithairon punished by Hera to repeat only others' last words; rejected by Narcissus, she wasted away leaving only her voice, with an alternative Pan tradition from Longus.
Echo (The Americans)
"Echo" is the thirteenth episode and season finale of the second season of the American television drama The Americans, written by Joel Fields and Joe Weisberg and directed by Daniel Sackheim.
Echo & the Bunnymen
Echo & the Bunnymen, Liverpool post-punk band formed 1978 by Ian McCulloch and Will Sergeant; albums Crocodiles and Ocean Rain, hit The Killing Moon; reformed 1997, new album Apples for Isaac 2026.
Echo 3
Echo 3 is a 2022 Apple TV+ action thriller, Mark Boal's adaptation of the Israeli series When Heroes Fly, starring Michiel Huisman, Luke Evans, and Jessica Ann Collins in a Colombia-set kidnapping rescue story; 10 episodes, Metascore 67.
Echo and Narcissus
Echo and Narcissus: intertwined Greek myth told fully in Ovid's Metamorphoses 3.339–510, where the self-loving youth wastes away at a spring and the Hera-cursed nymph dwindles to a voice; source of the psychological term narcissism and a vast art and literary reception.
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 chamber (media)
Echo chamber (media): a media environment reinforcing beliefs via like-minded peers and sources; related to Pariser's filter bubble. Evidence is split: computational homophily studies support it, surveys and Facebook experiments question its polarizing effects.
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 in the Canyon
Echo in the Canyon (2018) is Andrew Slater's documentary, hosted by Jakob Dylan, on the 1965-1967 Laurel Canyon scene and the California Sound of the Byrds, Beach Boys, Buffalo Springfield, and the Mamas and the Papas, inspired by a 2015 Orpheum tribute concert.
Echo Kellum
Echo Kellum, American actor and comedian born 1982 in Chicago, trained at Groundlings/UCB, known for Curtis Holt/Mr. Terrific on Arrow, roles in Ben & Kate and Sean Saves the World, and lead Noah on NBC's Grand Crew.
Echo Mensa
Echo Mensa is a 205-km-wide flat-topped plateau (mensa) in the far south of Jupiter's moon Io, IAU-named in 1985 for the Greek Echo, mother of Iynx, with a scarp about 1 km high.
Echo Music Prize
Echo Music Prize (ECHO, Deutscher Musikpreis): German music award of the Deutsche Phono-Akademie/BVMI, 1992–2018, in pop, classical, and jazz; pop winners chosen by chart sales, ended after the 2018 Kollegah and Farid Bang antisemitism scandal.
Echo of a Scream
Echo of a Scream (Eco de un grito) is a 1937 painting by Mexican muralist David Alfaro Siqueiros, held at the Museum of Modern Art in New York.
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 sounding
Echo sounding, also called depth sounding, measures water depth by timing a sound pulse's return from the seabed; it replaced 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.
Echo Valley
Echo Valley is a 2025 Apple Original Films thriller directed by Michael Pearce, written by Brad Ingelsby, starring Julianne Moore and Sydney Sweeney as a mother and daughter entangled in a cover-up after Claire arrives home covered in blood; streamed on Apple TV+ from June 13, 2025.
Echo-planar imaging
Echo-planar imaging (EPI) is a fast MRI pulse sequence, proposed by Peter Mansfield in 1977, that acquires images in tens of milliseconds and underlies fMRI and diffusion imaging.
Echocardiography
Echocardiography, also known as cardiac ultrasound, is a non-invasive test using ultrasound waves to image the heart, developed by Inge Edler and Carl Hertz in Sweden in 1953.
Echodyne
Echodyne Corp. is a privately held American radar company founded in 2014 in Kirkland, Washington, as a spin-off from Intellectual Ventures, making compact radars for defense and counter-drone markets.
Echoencephalography
Echoencephalography: A-mode ultrasound technique, introduced by Lars Leksell (1953-1956), measuring midline brain echoes, especially the pineal, to detect shift from intracranial masses; superseded by CT.
Echoes (miniseries)
Echoes is a 2022 Netflix seven-episode limited mystery thriller created by Vanessa Gazy, starring Michelle Monaghan as identical twins Leni and Gina who secretly swap lives until one disappears; it topped Netflix charts despite poor reviews.
Echoes (Pink Floyd song)
"Echoes" is a 23-minute progressive rock song by Pink Floyd, released on Meddle in 1971 and built around a sonar-like piano ping created with a Leslie speaker.
Echoes of an Autobiography
Echoes of an Autobiography (أصداء السيرة الذاتية) is a 1995 collection of over 200 very short prose pieces by the Egyptian novelist and Nobel laureate Naguib Mahfouz.
Echoes of Mana
Echoes of Mana was a free-to-play mobile action RPG in the Mana series, published by Square Enix and developed by Wright Flyer Studios for iOS and Android.
Echoes of Silence
Echoes of Silence is the third and final mixtape in the Weeknd's 2011 trilogy, released free on December 21, 2011, following House of Balloons and Thursday.