Reflection or reflexion may refer to:

Science and technology

Reflection (physics) Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves. Th ...

, a common wave phenomenon **

Specular reflection Specular reflection, or regular reflection, is the mirror-like reflection of waves, such as light, from a surface. The law of reflection states that a reflected ray of light emerges from the reflecting surface at the same angle to the su ...

, reflection from a smooth surface ***

Mirror image A mirror image (in a plane mirror) is a reflected duplication of an object that appears almost identical, but is reversed in the direction perpendicular to the mirror surface. As an optical effect it results from reflection off from substances ...

, a reflection in a mirror or in water **

Signal reflection In telecommunications, signal reflection occurs when a signal is transmitted along a transmission medium, such as a copper cable or an optical fiber. Some of the signal power may be reflected back to its origin rather than being carried all t ...

, in signal transmission *

Elastic scattering Elastic scattering is a form of particle scattering in scattering theory, nuclear physics and particle physics. In this process, the kinetic energy of a particle is conserved in the center-of-mass frame, but its direction of propagation is modif ...

, a process in nuclear and particle physics *

Reflection nebula Reflection or reflexion may refer to: Science and technology * Reflection (physics), a common wave phenomenon ** Specular reflection, reflection from a smooth surface *** Mirror image, a reflection in a mirror or in water ** Signal reflection, in s ...

, a nebula that is extended and has no boundaries *

Reflection seismology Reflection seismology (or seismic reflection) is a method of exploration geophysics that uses the principles of seismology to estimate the properties of the Earth's subsurface from reflected seismic waves. The method requires a controlled seis ...

or seismic reflection, a method of exploration geophysics

Mathematics

Reflection principle In set theory, a branch of mathematics, a reflection principle says that it is possible to find sets that resemble the class of all sets. There are several different forms of the reflection principle depending on exactly what is meant by "resemb ...

, in set theory *

Point reflection In geometry, a point reflection (point inversion, central inversion, or inversion through a point) is a type of isometry of Euclidean space. An object that is invariant under a point reflection is said to possess point symmetry; if it is invari ...

, a reflection across a point *

Reflection (mathematics) In mathematics, a reflection (also spelled reflexion) is a mapping from a Euclidean space to itself that is an isometry with a hyperplane as a set of fixed points; this set is called the axis (in dimension 2) or plane (in dimension 3) of r ...

, a transformation of a space *

Reflection formula In mathematics, a reflection formula or reflection relation for a function ''f'' is a relationship between ''f''(''a'' − ''x'') and ''f''(''x''). It is a special case of a functional equation, and it is very common in the literatur ...

, a relation in a function *

Reflective subcategory In mathematics, a full subcategory ''A'' of a category ''B'' is said to be reflective in ''B'' when the inclusion functor from ''A'' to ''B'' has a left adjoint. This adjoint is sometimes called a ''reflector'', or ''localization''. Dually, ''A ...

, in category theory

Computing

Reflection (computer graphics) Reflection in computer graphics is used to emulate reflective objects like mirrors and shiny surfaces. Accurate reflections can be accomplished e.g. by a ray trace renderer by following a ray from the eye to the mirror and then calculating wher ...

, simulation of reflective surfaces *

Reflection (computer programming) In computer science, reflective programming or reflection is the ability of a process to examine, introspect, and modify its own structure and behavior. Historical background The earliest computers were programmed in their native assembly lang ...

, a program that accesses or modifies its own code * Reflection, terminal emulation software by

Attachmate Attachmate Corporation is a 1982-founded software company which focused on secure terminal emulation, legacy integration, and managed file transfer software. Citrix-compatibility and Attachment ''Reflection'' were enhanced/added offerings. Hist ...

Arts and entertainment

Film and television

* ''The Reflection'' (TV series), an anime series created by Stan Lee and Hiroshi Nagahama * "Reflection", an episode of ''Power Rangers: SPD'' * ''Reflection'' (2018 film), a Burmese film * ''Reflection'' (2021 film), a Ukrainian film

Music

Albums

* ''Reflection'' (Brian Eno album) or the title song, 2017 * ''Reflection'' (Demis Roussos album), 1984 * ''Reflection'' (Derek Minor album), 2016 *

Reflection (Loraine James album) ''Reflection'' is the second album by London-based electronic musician Loraine James, released through Hyperdub in June 2021, which has been met with critical acclaim. It follows James' 2020 ''Nothing'' EP. Composition While ''Reflection'' is ...

, 2021 * ''Reflection'' (Fifth Harmony album) or the title song, 2015 * ''Reflection'' (Hooverphonic album), 2013 * ''Reflection'' (Pentangle album) or the title song, 1971 * ''Reflection'' (Redrama album), 2014 * ''Reflection'' (The Rubyz album) or the title song, 2011 * ''Reflection'' (Steamhammer album), or ''Steamhammer'', 1969 *

Reflection (Tofubeats album) ''Reflection'' is the sixth studio album by Japanese producer tofubeats, released on May 18, 2022 through Warner Music Japan Warner Music Group's labels include the following. Flagship labels *Atlantic Records *Elektra Records * Parlophone Re ...

or the title song, 2022 * ''Reflection'' (Unashamed album) or the title song, 1996 * '' Reflection: Axiom of the Two Wings'', by Mari Hamada, 2008 * ''The Reflection'' (album) or the title song, by Keb' Mo', 2011 * ''Reflection'', by Mr. Children, 2015 * ''Reflection'', by

the Shadows The Shadows (originally known as the Drifters) were an English instrumental rock group, who dominated the British popular music charts in the late 1950s and early 1960s, in the pre- Beatles era. They served as the backing band for Cliff Richar ...

, 1990 * ''Reflection'', by

Rophnan Rophnan Nuri Muzeyin (Amharic: ሮፍናን ኑሪ ሙዘይን; born 22 June 1990), known mononymously as Rophnan (stylized as all caps), is an Ethiopian musician, singer, songwriter, DJ, and audio engineer. Widely acclaimed, he is currently co ...

, 2018

Songs

* "Reflection" (song), from the soundtrack of the Disney film ''Mulan'', 1998 * "Reflection", by BTS from ''

Wings A wing is a type of fin that produces lift while moving through air or some other fluid. Accordingly, wings have streamlined cross-sections that are subject to aerodynamic forces and act as airfoils. A wing's aerodynamic efficiency is exp ...

'', 2016 * "Reflection", by Prince from '' Musicology'', 2004 * "Reflection", by

Seduce the Heaven Seduce the Heaven is a Greek melodic death/power metal band from Athens. Biography Seduce the Heaven was formed in mid-2009 by guitarist Alex Flouros and soon joined by the lyrical soprano Elina Laivera on vocals founding in this way the main st ...

, 2013 * "Reflection", by Tool from ''

Lateralus ''Lateralus'' () is the third studio album by American rock band Tool. It was released on May 15, 2001, through Volcano Entertainment. The album was recorded at Cello Studios in Hollywood and The Hook, Big Empty Space, and The Lodge, in North ...

'', 2001 * "Reflection", by Young Dolph and Key Glock from ''

Dum and Dummer ''Dum and Dummer'' is a collaborative album by American rappers Young Dolph and Key Glock Markeyvius LaShun Cathey (born August 3, 1997), better known by his stage name Key Glock, is an American rapper and songwriter from Memphis, Tennessee. A ...

'', 2019 * "Reflection", by

Bobbie Singer Bobbie Singer (born Tina Schosser, 22 February 1981, in Linz) is an Austrian singer, best known for her participation in the Eurovision Song Contest 1999. Biography Singer signed a record deal in 1996 at the age of 15, and released a single, " ...

* "The Reflection", by the Haunted from ''

The Dead Eye ''The Dead Eye'' is the fifth studio album by Swedish metal band The Haunted. It was released on 30 October 2006. The "bloodpack" edition includes the collectors edition DVD, promotional button, two-sided guitar pick, t-shirt, and a floating ...

'', 2006

Other art

* ''Reflection'', installation art by Shane Cooper * ''The Reflection'', a work of fiction by

Hugo Wilcken Hugo Wilcken is a Paris-based, Australian-born writer and translator. His works focus on themes of existentialism and ambiguity Ambiguity is the type of meaning in which a phrase, statement or resolution is not explicitly defined, making ...

Other uses

Self-reflection Self-reflection is the ability to witness and evaluate our own cognitive, emotional, and behavioural processes. In psychology, other terms used for this self-observation include 'reflective awareness', and 'reflective consciousness', which origi ...

, the ability to witness and evaluate our own cognitive, emotional, and behavioural processes * Reflection, a tool used in

reflective practice Reflective practice is the ability to reflect on one's actions so as to take a critical stance or attitude towards one's own practice and that of one's peers, engaging in a process of continuous adaptation and learning. According to one defini ...

and education