Asked by sofi
write the law of reflection
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Plain-English statement:
- The angle of incidence equals the angle of reflection. The incident ray, the reflected ray, and the surface normal all lie in the same plane.
Mathematical form:
- Measured from the surface normal n, θi = θr.
Vector form (unit vectors):
- If d is the incident direction (pointing toward the surface) and n is the unit normal at the point of reflection, the reflected direction r is
r = d - 2 (d · n) n.
This describes specular (mirror-like) reflection.
- The angle of incidence equals the angle of reflection. The incident ray, the reflected ray, and the surface normal all lie in the same plane.
Mathematical form:
- Measured from the surface normal n, θi = θr.
Vector form (unit vectors):
- If d is the incident direction (pointing toward the surface) and n is the unit normal at the point of reflection, the reflected direction r is
r = d - 2 (d · n) n.
This describes specular (mirror-like) reflection.
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