Reflection of Light
Learning Objectives
- Students will be able to state the law of reflection
- Students will be able to distinguish between specular and diffuse reflection
- Students will be able to predict light ray paths after reflection
Core Concepts
- law_of_reflection
- angle_of_incidence
- angle_of_reflection
- normal
- specular_reflection
- diffuse_reflection
Formulas
$$\theta_i = \theta_r$$
Law of Reflection: angle of incidence equals angle of reflection (measured from normal)
Interesting Fact
Retro-reflectors (like cat-eyes on roads) use multiple reflections to return light along original path
Key Scientist
Euclid
Formulated the law of reflection in ancient Greece
Philosophy
The law of reflection embodies the principle of reversibility: light's path is independent of its direction of travel, revealing fundamental symmetry in nature.
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