Jul 10
On a muggy spring day in Manhattan during the throes of the Great Depression, about 200 New York University students shuffled into a room on the 62nd floor of the RCA Building. They were there for a lesson on the principles of photoelectricity, taught by their professor, Dr. C. C. Clark. But strangely, the professor wasn’t there in the room with them. At least not in the flesh.
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