Science: Sun Power

Members of the great German learned society Kaiser Wilhelm Gesallschaft zur Förderung der Wissenschaften went to the Berlin suburb of Dahlem, walked down Faradayweg to the Kaiser Wilhelm Institute for Silicate Research. There they heard Professor-Doktor Wilhelm Eitel, physical-chemist, director of the silicate research, speak of "one of the most sensational discoveries of the decade." They surveyed the discovery, a small metal disc which would do what scientists have been predicting and working towards for years —make electricity out of sunlight.

The invention is the...

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