Law of Reflection Diagram - Physics Optics Illustration #233026 (License: Personal Use)

This hand-drawn schematic illustrates the fundamental principle of reflection in geometric optics: an incident ray (labeled *a*) strikes a reflective surface (*c*), producing a reflected ray (*a′*), with both angles measured relative to the normal (horizontal line). The vertical striped rectangle represents a mirror or polished surface, and the symmetry emphasizes that θᵢ = θᵣ. The notation follows traditional 19th-century physics textbooks.

Used in educational contexts-high school or university physics pages, optics tutorials, or historical science archives-to explain reflection principles; matches user intent for visual learning, homework help, or curriculum support.