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1 card from this section. Quick, good the night before a test.
Define Snell's Law.
Think about the relationship between angles.
What is a refractive index?
It's a ratio related to light's speed.
What does Snell's Law describe?
Think about the relationship between two different materials.
True or False: The critical angle is the angle of incidence where total internal reflection occurs.
Remember the definition of critical angle.
If light travels from glass (n=1.5) into oil (n=1.3) at an incidence angle of 40 degrees, calculate the angle of refraction.
Use Snell’s Law and remember to convert angles to the right units.
Discuss how total internal reflection is crucial for fiber optics and what would happen without it.
Think about light traveling through fiber without any reflections.
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