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| [[Image:Minimum deviation.jpg|thumb|Angle of deviation. The green square represents a transparent object. Red arrows at left and right represent incident and emerging light beams, respectively.]]
| | Hi there, I am Alyson Boon although it is not the title on my birth certification. For many years she's been operating as a travel agent. My husband doesn't like it the way I do but what I really like doing is caving but I don't have the time recently. Her family members lives in Ohio.<br><br>my blog post :: online psychics ([http://www.publicpledge.com/blogs/post/7034 www.publicpledge.com]) |
| [[File:Minimum deviatiation of a prism.svg|thumb|In a prism, the deviation is minimal for the symmetric light path (top trace).]]
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| The '''[[minimum]] deviation''' is the angle between the incident and emerging light ray after transmission through an object such as a [[prism (optics)|prism]] or a [[Drop (liquid)|water drop]]. The angle is also referred to as "the angle of minimum deviation".<ref>{{cite web|author=Mark A. Peterson |url=http://www.mtholyoke.edu/~mpeterso/classes/phys103/geomopti/MinDev.html |title=Minimum Deviation by a Prism |publisher=[[Mount Holyoke College]] }}</ref> The direction of the incident beam and the orientation of the object can be varied. The value of ''D'' can be larger than 90 [[degree (angle)|degree]]s. One of the factors that [[rainbow]] can be observed is due to bunching of light rays at the minimum deviation that is close to the rainbow angle.
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| The angle of minimum deviation depends upon:-
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| 1.''' Wavelength of the light ray (λ):-'''The angle of minimum deviation is smaller for longer wavelengths and larger for shorter wavelengths, so the "red" end of the spectrum deviates less than the "violet" end.
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| 2.'''Material of the prism (μ):-'''The larger the refractive index of the material, the larger the angle of minimum deviation.
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| 3.'''Angle of prism(A):-'''The larger the angle of prism, the larger the angle of minimum deviation.
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| 4.'''Angle of incidence(i):-'''The angle of deviation is dependent on the angle of incidence in the form of a U shaped curve
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| If a line is drawn parallel to the angle of incidence axis (X-axis), it cuts the graph at two points, showing that there are two values of angle of incidence for an angle of deviation. However, at the point of angle of minimum deviation, the line will be tangent to the curve showing that for minimum angle of deviation there is only one angle of incidence.
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| The refractive index ''μ'', angle of minimum deviation ''D'' of light with wavelength ''λ'' through a prism with internal angle ''A'' are related by the following formula:<ref>{{cite web | url=http://www.scribd.com/doc/121455659/Angle-of-Deviation-through-a-Prism |title=Derivation of Angle of Deviation through a Prism }}</ref>
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| <math>\mu_\lambda={\sin ({A+D_\lambda \over 2}) \over \sin ({A \over 2})}</math>
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| ==References==
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| <references/>
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| [[Category:Optics]]
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| {{optics-stub}}
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Latest revision as of 20:19, 23 August 2014
Hi there, I am Alyson Boon although it is not the title on my birth certification. For many years she's been operating as a travel agent. My husband doesn't like it the way I do but what I really like doing is caving but I don't have the time recently. Her family members lives in Ohio.
my blog post :: online psychics (www.publicpledge.com)