All articles starting with X
1,563 articles
X-Men: First Class
X-Men: First Class (2011) is Matthew Vaughn's X-Men prequel starring James McAvoy and Michael Fassbender as young Charles Xavier and Magneto during the 1962 Cuban Missile Crisis; it rebooted the Fox franchise.
X-Men: From the Ashes
X-Men: From the Ashes is Marvel Comics' 2024 relaunch of the X-Men line after the Krakoa era ended in June 2024. Led by editor Tom Brevoort, it launched X-Men, Uncanny X-Men, and Exceptional X-Men, and ended with the 2025 Age of Revelation event.
X-Men: God Loves, Man Kills
X-Men: God Loves, Man Kills is a 1982 Marvel Graphic Novel (#5) by Chris Claremont and Brent Anderson in which the X-Men and Magneto battle televangelist William Stryker and his Purifiers; loose basis for the film X2.
X-Men: Pryde of the X-Men
Pryde of the X-Men (X-Men: Pryde of the X-Men) is Marvel's 1989 animated TV pilot starring Kitty Pryde, Professor X, Cyclops, Storm, Wolverine, Colossus, Nightcrawler, and Dazzler against Magneto. Animated by Toei, never picked up, it inspired the 1992 Konami arcade game and X-Men: The Animated Series.
X-Men: Shadows of Tomorrow
X-Men: Shadows of Tomorrow, announced at NYCC 2025, is Marvel Comics' 2026 X-Men publishing banner after Age of Revelation, in which mutants prevent a dystopian future; also the name of Panini France's bimonthly French anthology collecting those series.
X-Men: The Animated Series
X-Men: The Animated Series is the 1992-1997 Fox Kids Marvel cartoon, 76 episodes in 5 seasons, showrun by Eric Lewald, championed by Margaret Loesch, adapted Dark Phoenix and Days of Future Past, and continues as X-Men '97.
X-Men: The Last Stand
X-Men: The Last Stand, also known as X-Men 3, is a 2006 American superhero film directed by Brett Ratner, the third in the X-Men series.
X-O Manowar
X-O Manowar is Valiant's armored hero, Aric of Dacia, a fifth-century Visigoth abducted by aliens who bonds with the sentient Shanhara armor and returns 1,600 years later. Created 1992; relaunched 2012 by Venditti and Nord.
X-Plane (simulator)
X-Plane is a flight simulator for personal computers developed by Laminar Research and written by Austin Meyer, which computes how aircraft fly from their geometry using blade element theory rather than pre-programmed data.
X-point radiator
The X-point radiator (XPR) is a cold, strongly radiating plasma volume at the magnetic X-point of a tokamak, used to radiate heating power and suppress ELMs.
X-Qlusive Holland
X-Qlusive Holland is a recurring hardstyle event series by Dutch promoter Q-dance, first held in 2003, mixing leading Dutch hardstyle DJs with Dutch-language party acts.
X-Raided
X-Raided, the stage name of Anerae Veshaughn Brown, is an American gangsta rapper from Sacramento, California, who recorded 12 albums from prison and was paroled in 2018 after 26 years for murder.
X-ray
An X-ray, or Röntgen ray, is a form of electromagnetic radiation with wavelengths between 0.03 and 3 nanometers, discovered by Wilhelm Conrad Roentgen in 1895 and widely used in medical imaging.
X-ray absorption fine structure spectroscopy
X-ray absorption fine structure (XAFS) spectroscopy is a synchrotron technique measuring oscillations in X-ray absorption near an element's absorption edge to determine local atomic structure, including bond distances and oxidation states.
X-ray absorption near-edge structure spectroscopy
X-ray absorption near-edge structure (XANES) spectroscopy, also called NEXAFS, measures X-ray absorption near an element's absorption edge to determine oxidation state, coordination geometry, and unoccupied electronic states.
X-ray binary
An X-ray binary is a binary star system where a neutron star or black hole accretes matter from a companion star, producing intense X-ray emission.
X-ray burster
An X-ray burster, also called an X-ray burst source, is an X-ray binary in which a neutron star accreting matter from a companion produces sudden thermonuclear X-ray bursts; more than 110 are known in our galaxy.
X-ray crystallography
X-ray crystallography, also known as X-ray structural analysis, determines the arrangement of atoms in a crystal from its X-ray diffraction pattern, and is the most commonly used method to determine molecular structures.
X-ray detector
An x-ray detector is a device that converts x-ray photons into measurable electrical signals for imaging or dose readings, using direct semiconductor conversion or indirect scintillator-based conversion.
X-ray diffraction
X-ray diffraction is a set of techniques in which X-rays scattered by a crystalline solid produce patterns that reveal atomic arrangement, used to identify materials and determine crystal structures.
X-ray diffraction imaging
X-ray diffraction imaging, commonly called X-ray topography, is a family of nondestructive techniques that map defects, strain, and distortions inside single crystals by recording diffracted X-ray intensity.
X-ray diffraction of shocked matter
X-ray diffraction of shocked matter measures atomic structure in a material while a shock wave compresses it, using a short X-ray pulse timed to peak compression.
X-ray emission spectroscopy
X-ray emission spectroscopy (XES) is an element-selective technique measuring the X-ray photons emitted when a core hole is filled, probing electronic structure, spin state, and ligand environment.
X-ray excited optical luminescence
X-ray excited optical luminescence (XEOL) is a spectroscopy technique in which X-ray absorption makes a material emit visible, ultraviolet, or near-infrared light, measured against X-ray energy.
X-Ray Film
X-ray film: silver halide emulsion on a polyester base, used with intensifying screens as the classic radiographic image receptor; 8–12 line pairs/mm resolution, limited dynamic range, now largely replaced by digital detectors.
X-ray fluorescence
X-ray fluorescence (XRF), also called X-ray fluorescence spectroscopy, is an analytical technique that determines a material's elemental composition by exciting atoms with X-rays and measuring the emitted characteristic X-rays.
X-ray fluorescence microscopy
X-ray fluorescence microscopy (XFM), also known as X-ray fluorescence imaging, scans a focused X-ray beam across a sample and records fluorescence to produce quantitative maps of elemental distribution.
X-ray free-electron laser
An X-ray free-electron laser (XFEL) is a light source producing intense, coherent, ultrashort X-ray pulses by passing electron bunches through an undulator; the first hard-X-ray device, LCLS, first lased in 2009.
X-ray holography
X-ray holography is a lensless coherent X-ray imaging technique that extends Dennis Gabor's 1948 holographic method to X-ray wavelengths, recording both amplitude and phase information.
X-Ray Intensifying Screens
X-ray intensifying screens are fluorescent phosphor sheets in film cassettes that convert X-rays to visible light, cutting patient dose. Calcium tungstate dominated from 1896 until rare-earth phosphors arrived in the 1970s.