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[[Image:lighterstill.jpg]][[Image:[[Image:Light dispersion conceptual.gif|right|frame]]

[[Image:lighterstill.jpg]][[Image:Light dispersion conceptual.gif|right|frame]]

'''Refraction''' is the change in direction of a wave due to a change in its speed. This is most commonly observed when a wave passes from one [[medium]] to another. Refraction of [[light]] is the most commonly observed example, but any type of wave can refract when it interacts with a medium, for example when [[sound]] waves pass from one medium into another or when water waves move into water of a different depth. Refraction is described by Snell's law, which states that the angle of incidence is related to the angle of refraction by

'''Refraction''' is the change in direction of a wave due to a change in its speed. This is most commonly observed when a wave passes from one [[medium]] to another. Refraction of [[light]] is the most commonly observed example, but any type of wave can refract when it interacts with a medium, for example when [[sound]] waves pass from one medium into another or when water waves move into water of a different depth. Refraction is described by Snell's law, which states that the angle of incidence is related to the angle of refraction by

==References==

==References==

#"[http://www.eyeglossary.net/#R Eye Glossary". http://www.eyeglossary.net/#]  

#"[https://www.eyeglossary.net/#R Eye Glossary". https://www.eyeglossary.net/#]  

#[http://www.nwdc.navy.mil/library/documents/1-02_(Aug_2006)_(NTRP).pdf Navy Supplement to the DOD Dictionary of Military and Associated Terms]. Department Of The Navy. August 2006. NTRP 1-02

#[https://www.nwdc.navy.mil/library/documents/1-02_(Aug_2006)_(NTRP).pdf Navy Supplement to the DOD Dictionary of Military and Associated Terms]. Department Of The Navy. August 2006. NTRP 1-02

#Mary Somerville, On the Connexion of the Physical Sciences, J. Murray Publishers, (originally by Harvard University), 499 pages (1840)

#Mary Somerville, On the Connexion of the Physical Sciences, J. Murray Publishers, (originally by Harvard University), 499 pages (1840)

# [http://www.springerlink.com/content/x1707075n815g604/ 1] C. Michael Hogan, Analysis of highway noise, Journal Water, Air, & Soil Pollution, Publisher Springer Netherlands, ISSN 0049-6979, Volume 2, Number 3, Pages 387–392, September, 1973

# [https://www.springerlink.com/content/x1707075n815g604/ 1] C. Michael Hogan, Analysis of highway noise, Journal Water, Air, & Soil Pollution, Publisher Springer Netherlands, ISSN 0049-6979, Volume 2, Number 3, Pages 387–392, September, 1973

*David W. Ward and Keith A. Nelson: On the Physical Origins of the Negative Index of Refraction, New Journal of Physics, 7, 213 (2005).

*David W. Ward and Keith A. Nelson: On the Physical Origins of the Negative Index of Refraction, New Journal of Physics, 7, 213 (2005).

==External links==

==External links==

* [http://www.phy.ntnu.edu.tw/ntnujava/viewtopic.php?t=32 Java explanatory animation]

* [https://www.phy.ntnu.edu.tw/ntnujava/viewtopic.php?t=32 Java explanatory animation]

* [http://www.falstad.com/ripple/ex-refraction.html Java illustration of refraction]

* [https://www.falstad.com/ripple/ex-refraction.html Java illustration of refraction]

* [http://www.phy.hk/wiki/englishhtm/RefractionByPrism.htm Java simulation of refraction through a prism]

* [https://www.phy.hk/wiki/englishhtm/RefractionByPrism.htm Java simulation of refraction through a prism]

* [http://www.flipcode.com/archives/reflection_transmission.pdf Reflections and Refractions in Ray Tracing, a simple but thorough discussion of the mathematics behind refraction and reflection.]

* [https://www.flipcode.com/archives/reflection_transmission.pdf Reflections and Refractions in Ray Tracing, a simple but thorough discussion of the mathematics behind refraction and reflection.]

[[Category: Physics]]

[[Category: Physics]]

[[Category: Mathematics]]

[[Category: Mathematics]]