Concept explainers
To Explain: The causes of brilliant sparkle of a diamond.
Answer to Problem 55A
The brilliance sparkle of diamonds is anoutcome of total internal reflection.
Explanation of Solution
Introduction: Change in the direction of light or bending of light when it (light) travels from one medium to different medium, known as Refraction. Angle of incident in any optically denser medium for which angle of the refraction is right angle, called critical angle.
When light passes (or go through) from one medium of larger refractive index into one of the smaller refractive indexes, refracted ray always bends away from normal.
When a diamond is shaped as a gemstone, light that enters at one facet is usually totally internally reflected numerous times, without any loss in intensity, before exiting from another facet in another direction.
Because of unusually low
- Its high index of refraction
- Small critical angle.
Conclusion: Light travels very slowly in a diamond.
Chapter 29 Solutions
Conceptual Physics: The High School Physics Program
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