Lightning Model
Photograph by Westinghouse Electric Corp
This month in Photo of the Day: Images From the National Geographic Archive
Westinghouse engineers use this miniature system for tests. Upper wires detour the three-million-volt harmlessly to the ground. Lower wires, which carry the power load, are thereby protected against lightning, which might shut off the current or damage equipment. Even the cows are man-made.
Bus Terminal, New York
Photograph by Standard Oil (New Jersey) collection, Photographic Archives, University of Louisville
This month in Photo of the Day: Images From the National Geographic Archive
Travelers rest on benches in a Greyhound bus terminal.
From the National Geographic book The Image Collection.