Digest>Jan/Feb 2010

Photo By:


Jeremy D'Entremont

Photo Caption:

This 4th order Fresnel lens was removed from Whaleback Lighthouse in the 1960s. It is now in storage at the Peabody-Essex Museum in Salem, Massachusetts. It was replaced by a DCB-224 that was also later removed from the tower.
Back to the edition of: Jan/Feb 2010


Wave of the Future
Back to the edition of: Jan/Feb 2010

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