Law of Reflection Diagram - Physics Education Resource #233057 (License: Personal Use)

This black-and-white educational diagram shows a light beam striking a flat mirror surface, with the incident beam, reflected beam, mirror plane, and perpendicular (normal) line clearly labeled. Angles α and β indicate the angles of incidence and reflection, respectively, both measured from the perpendicular line, confirming the principle that α = β. The illustration is rendered in precise technical drawing style typical of early 20th-century physics textbooks.

Used in educational contexts such as high school or introductory college physics courses to teach optical principles; supports user intent to understand or visualize how reflection works for exams, lesson prep, or self-study.