1. What is Reflection?

Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. The law of reflection states that the angle of incidence equals the angle of reflection.

2. How Does Reflection Calculation Work?

The calculator uses the reflection principle:

Where:

• \( \text{Incident Angle} \) — The angle between the incident ray and the normal to the surface (degrees)
• \( \text{Reflected Angle} \) — The angle between the reflected ray and the normal to the surface (degrees)

Explanation: This fundamental principle applies to all types of wave reflection, including light, sound, and water waves.

3. Importance of Reflection Calculation

Details: Understanding reflection is crucial in optics, acoustics, radar technology, and many engineering applications. Accurate reflection calculations help design mirrors, optical systems, and acoustic environments.

4. Using the Calculator

Tips: Enter the incident angle in degrees (0-90°). The calculator will compute the reflected angle using the law of reflection.

5. Frequently Asked Questions (FAQ)

Q1: Does this apply to all types of waves?
A: Yes, the law of reflection applies to light, sound, and other wave phenomena when they encounter a reflective surface.

Q2: What is the normal line in reflection?
A: The normal is an imaginary line perpendicular to the reflective surface at the point of incidence.

Q3: Does surface roughness affect reflection?
A: Yes, rough surfaces cause diffuse reflection where light scatters in many directions, while smooth surfaces produce specular reflection.

Q4: Can the incident angle be greater than 90 degrees?
A: No, incident angles are measured from the normal and typically range from 0° to 90°.

Q5: How does this apply to curved surfaces?
A: For curved surfaces, the law applies at each point locally, with the normal being perpendicular to the tangent at that point.