Image: Fresnel lens, 5th order, used in Jones Point lighthouse, 1800s - The Lyceum - Alexandria, Virginia - DSC03500
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Description: Exhibit in the Lyceum (Alexandria, Virginia, USA). This work is old enough so that it is in the public domain. Photography was permitted in the museum without restriction.
Title: Fresnel lens, 5th order, used in Jones Point lighthouse, 1800s - The Lyceum - Alexandria, Virginia - DSC03500
Credit: Own work
Author: Daderot
Usage Terms: Creative Commons Zero, Public Domain Dedication
License: CC0
License Link: http://creativecommons.org/publicdomain/zero/1.0/deed.en
Attribution Required?: No
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