Image: Beavertail Light 4th order Fresnel lens
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Description: 4th order fixed "beehive" Fresnel lens. This was the last such lens installed at Beavertail Light in Jamestown, Rhode Island, USA. Source: http://www.beavertaillight.org/history.html
Title: Beavertail Light 4th order Fresnel lens
Credit: Own work
Author: RoySmith
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes
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