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Critical Angle
The least angle of incidence at which total internal reflection takes place. The angle of incidence in a denser medium, at an interface between the denser and less dense medium, at which the light is refracted along the interface. When the critical angle is exceeded, the light is totally reflected back into the denser medium. The critical angle varies with the indices of refraction of the two media with the relationship: sinIc = n´/n where Ic is the critical angle; n´ the refractive index of the less dense medium; and n the refractive index of the denser medium.
 Critical Angle: In the above diagram, light is lost along the interface until reaching the Critical Angle of 60 degrees. To learn more about Critical Angle, you can submit us a web request, or call Timbercon today, 1-800-221-6992, to get in contact with our experienced sales engineers. Related glossary terms: Launch Angle Critical Absorption Wavelength Radiation Angle Angle of Incidence Angle of Refraction Critical Phase Matching Angle of Deviation Diffraction Angle Vertex Angle Search more fiber optic glossary terms:
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Critical Angle and YouTimbercon provides the best in customized fiber optic solutions while offering a wide selection of products, quality USA-made craftsmanship, friendly customer service, and fast turnaround. To learn about Critical Angle for your custom application, you can submit us a quick quote, or call Timbercon today, 1-800-221-6992, to get in contact with our experienced sales engineers. | ||||
