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Reflection Angle Calculator — result sheet
Calculate the reflected angle and complementary angle to the surface from an entered angle of incidence.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: For specular reflection, reflection angle = incidence angle; angle to the surface = 90° − incidence angle.
The law of reflection measures both incidence and reflection from the normal line rather than from the surface itself.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Angle of incidence — degrees; minimum 0; maximum 90
Worked example
| Input | Value |
|---|---|
| Angle of incidence | 30 |
Reflection angle = 30°; angle to surface = 60°.
Assumptions and limits
- The incident angle is measured from the normal and lies from 0° to 90°.
- The surface is treated as smooth and reflective in a geometric-optics model.
- Diffuse scattering, refraction, polarization, and surface roughness are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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