Fresnel Lens
A large Fresnel lens is displayed in the Portland Head Lighthouse Museum. This lens goes from the floor all the way up to the ceiling. This lens was used in the lighthouse, before being replaced by an aero beacon in 1958.
243
views
0
faves
0
comments
Uploaded on June 15, 2011
Taken on June 9, 2011
Fresnel Lens
A large Fresnel lens is displayed in the Portland Head Lighthouse Museum. This lens goes from the floor all the way up to the ceiling. This lens was used in the lighthouse, before being replaced by an aero beacon in 1958.
243
views
0
faves
0
comments
Uploaded on June 15, 2011
Taken on June 9, 2011