Digest>October 2005
Photo By:
Eric Hanauer
Photo Caption:
Lighting the great gas mantles of the Al-lkhwan Lighthouse, a masterpiece of 19th century technology that includes a Fresnel lens capable of magnifying light 200 times and flashing a beam visible for 30 kilometers away. Back to the edition of: October 2005
Story:
The Lighthouse of Al-Ikhwan
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