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3 cards from this section. Quick, good the night before a test.
Define refractive index.
Think about how the speed changes in different environments.
What does an angle of incidence refer to?
Look for the orientation before refraction.
What does a refractive index of 1.5 mean?
Consider how light's speed compares.
True or False: The refractive index has units.
Remember how it compares two speeds.
A beam of light enters a new medium at 45° and bends to 30°. Find the refractive index. Discuss what this value implies about the medium.
Use the sine relationship and analyze the implications of density.
Consider light transitioning from glass to water. Given the refraction angles, analyze how the refractive indices could differ and impact sight.
Think about how each medium affects light perception and bending.
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