What optical device did Brewster develop for lighthouses?
Fresnel lens
Lighthouse illuminator
Prismatic reflector
Halogen lamp
Answer
The lighthouse illuminator, developed by Scottish physicist Sir David Brewster, revolutionized lighthouse technology. It employed a series of lenses and mirrors to enhance the intensity and range of the light emitted from lighthouses, significantly improving visibility for mariners during nighttime navigation. This innovation increased safety and reduced the risk of maritime accidents, making the lighthouse illuminator a crucial invention in maritime navigation.
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