Smith Island Lighthouse 4th Order Fresnel Lens, 1884
A Fresnel lens is a convex lens surrounded with bands of glass ground so that they have all the same focal point. This Fresnel lens was made in 1884 by Barbier and Fenestre in Paris for the Smith Island Lighthouse built by the Coast Guard in 1858. Smith Island is located at the junction of Rosario a...
| Format: | Other/Unknown Material |
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| Language: | unknown |
| Published: |
1884
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| Subjects: | |
| Online Access: | http://cdm16786.contentdm.oclc.org:80/cdm/ref/collection/imlsmohai/id/16129 |