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View of Fresnel lens | by Ctd 2005
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View of Fresnel lens

These lenses were used to magnify the flame lights to guide, warn & ward off mariners from dangerous shorelines . they were well made optical wonders and this one is out of a light 7 or so kilometers from Yarmouth which has been replaced with modern "brilliance". the bronze struts/armature for this structure of glass is amazing.

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Taken on August 21, 2005