Science: Private Corner

Long before he moved from Germany to the Institute for Advanced Study at Princeton, Albert Einstein wrote an equation based on Planck's little constant h to explain how and why light falling on a metal kicks electrons out of the metal, setting up electric currents. This photoelectric effect is now familiar to laymen because it serves to open doors in restaurants and railway stations, operate drinking fountains.

Last week Washington's alert Science Service, browsing among the patent files, discovered that in his long search for a Unified Field Theory the great mathematician had...

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