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  • The path of a light ray in ...
    Luca, R De

    Physics education, 11/2023, Volume: 58, Issue: 6
    Journal Article

    Abstract It is well known that the path of a light ray incident on the inner reflecting wall of a circular cavity can be constructed by geometric means. Analogous to what is done in this more common geometric configuration, trajectories of light rays in a semicircular closed region with perfectly reflecting inner walls are found. A ruler-and-compass method for obtaining these trajectories is illustrated.