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. The ...

, a common wave phenomenon **

Specular reflection Specular reflection, or regular reflection, is the mirror-like reflection (physics), reflection of waves, such as light, from a surface. The law of reflection states that a reflected ray (optics), ray of light emerges from the reflecting surf ...

, mirror-like reflection of waves from a surface ***

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

, a reflection in a mirror or in water **

Diffuse reflection Diffuse reflection is the reflection of light or other waves or particles from a surface such that a ray incident on the surface is scattered at many angles rather than at just one angle as in the case of specular reflection. An ''ideal'' dif ...

, where ray incident on the surface is scattered ** Retroreflection, technology for returning light in the direction from which it came ** Signal reflection, 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 internal states of the Elementary particle, particles involved stay the same. In the non-relativistic case, where ...

, a process in nuclear and particle physics * Reflection nebula, a nebula that is extended and has no boundaries * Reflection seismology 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, with respect to any given property, resemble the class of all sets. There are several different forms of the reflection principle depending ...

, in set theory * Point reflection, 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 the 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, 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 *

Reflection symmetry In mathematics, reflection symmetry, line symmetry, mirror symmetry, or mirror-image symmetry is symmetry with respect to a Reflection (mathematics), reflection. That is, a figure which does not change upon undergoing a reflection has reflecti ...

, the property of being unchanged by a reflection

Computing

* Reflection (computer graphics), simulation of reflective surfaces *

Reflection mapping In computer graphics, reflection mapping or environment mapping is an efficient image-based lighting technique for approximating the appearance of a reflective surface by means of a precomputed texture. The texture is used to store the image o ...

, an efficient image-based lighting technique for approximating the appearance of a reflective surface by means of a precomputed texture * Reflection (

reflective 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 computer program that accesses or modifies its own code * Reflection, terminal emulation software by Attachmate * Reflection (artificial intelligence), a technique used in large language models (LLMs)

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 * "The Reflection", an episode of the TV series ''

Pocoyo ''Pocoyo'' ( in Spanish and stylised as ''POCOYO'') is an animated interactive preschool comedy television series created by David Cantolla, Luis Gallego, and Guillermo García Carsí, that premiered on 7 January 2005 on La 2. The series was ...

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), 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) 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 between 1958 and 1959) were an English instrumental rock group, who dominated the British popular music charts in the pre-Beatles era from the late 1950s to the early 1960s. They served as the bac ...

, 1990 * ''Reflection'', by Rophnan, 2018 * ''Reflection'', by Kelly Chen, 2013

Songs

* "Reflection" (song), by Christina Aguilera from the soundtrack of the animated Disney film, ''Mulan'' (1998) * "Reflection", by Bobbie Singer, Austria's selection for the Eurovision Song Contest 1999 * "Reflection", by As I Lay Dying from '' Shadows Are Security'', 2005 * "Reflection", by Bleeding Through from '' Dust to Ashes'', 2001 * "Reflection", by BTS from '' Wings'', 2016 * "Reflection", by

Mirror A mirror, also known as a looking glass, is an object that Reflection (physics), reflects an image. Light that bounces off a mirror forms an image of whatever is in front of it, which is then focused through the lens of the eye or a camera ...

from ''One and All'', 2019 * "Reflection", by Prince from ''

Musicology Musicology is the academic, research-based study of music, as opposed to musical composition or performance. Musicology research combines and intersects with many fields, including psychology, sociology, acoustics, neurology, natural sciences, ...

'', 2004 * "Reflection", by Seduce the Heaven from ''Field of Dreams'', 2013 * "Reflection", by Tool from '' Lateralus'', 2001 * "Reflection", by Young Dolph & Key Glock from '' Dum and Dummer'', 2019 * "The Reflection", by The Haunted from '' The Dead Eye'', 2006

Other art

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

Other uses

* Self-reflection, 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 definiti ...

and education * Reflective surfaces (climate engineering)