SmugMug > keywords > spectacles > Studies of the maritime law.
SmugMug > keywords > spectacles > Seen here are my sunglasses (top) and my regular clear glasses (bottom).  In visible light (left), the sunglasses look dark and the regular glasses look clear - as expected.  In ultraviolet light (right), however, both the sunglasses and clear glasses look dark.

The cause?  Modern glasses commonly feature UV-filtering plastics to protect the eyes from harmful sunlight.  This photograph clearly illustrates the legitimacy of this feature.
SmugMug > keywords > spectacles > Spectacles
SmugMug > keywords > spectacles > Windowscape
SmugMug > keywords > spectacles > The Spectacles
SmugMug > keywords > spectacles > The Specktacles, Arches National Park
SmugMug > keywords > spectacles > Spectacles for the colour blind
SmugMug > keywords > spectacles > Brown and white, long hair, furry, chihuahua dog wearing gold rimmed reading glasses, looking like a grandpa!. White background
SmugMug > keywords > spectacles > A sophisticated, and surprised old woman. NOTE: this image is only available for limited editorial or personal use -- it is NOT available for commercial use.
Studies of the maritime law.
 > Studies of the maritime law.
Studies of the maritime law.
Photo by: gekko • see photo in gallery

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