Digest>September 2008
Photo Caption:
This view of the main exhibition room in the Electricity Building of the World's Columbian Exhibition shows one of the Fresnel lenses from France in the bottom right of the photo. The triangle display was of a Westinghouse Electric & Manufacturing ompany "Tesla Polyphase System," which was a new type of induction motor. Back to the edition of: September 2008
Story:
Lighthouses At The 1893 World's Columbian Exposition
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