Eiffel Tower - Father Theodor Wulf measured radiant energy at the top and bottom of the tower

Time: 1910

Place: Paris, France

Details: Many innovations took place at the Eiffel Tower in the early 20th century. In 1910, Father Theodor Wulf measured radiant energy at the top and bottom of the tower. He found more at the top than expected, incidentally discovering what are known today as cosmic rays.

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