Explore how light reflects off mirrors according to the law of reflection.
Move the light source and adjust the mirror angle to hit the target!
Law of Reflection: θᵢ = θᵣ
TARGET
Observation:
The angle of incidence equals the angle of reflection (θᵢ = θᵣ).
The Science of Light Reflection
Law of Reflection:
- Incident Ray: The incoming light beam
- Reflected Ray: The bouncing light beam
- Normal Line: Imaginary perpendicular to the mirror surface
- Angle of Incidence (θᵢ) = Angle of Reflection (θᵣ)
Key Concepts:
- Smooth surfaces (like mirrors) produce specular reflection
- Rough surfaces produce diffuse reflection
- The normal line is crucial for measuring angles
- Mirrors reverse images front-to-back (not left-to-right)
Real-world Applications:
- Periscopes: Use multiple mirrors to see around obstacles
- Telescopes: Use curved mirrors to focus light
- Solar Cookers: Concentrate sunlight using reflective surfaces
- Safety Devices: Car mirrors use convex mirrors for wider views
