A parabolic reflector improves lighthouse illumination by effectively concentrating and directing light beams from a light source. The parabolic shape allows all lines incident on its surface to project light in parallel directions, creating a powerful beam that is directed toward the horizon. This ability to focus light enhances visibility for mariners, ensuring that the lighthouse is seen from greater distances.
Furthermore, the reflector's design increases the total amount of light that reaches the observer by reflecting a larger portion of the light emitted from the flame in a controlled manner, thus making the lighthouse light significantly brighter and more distinguishable[1].
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