Science: Cathode Rays

The members of the Franklin Institute of Philadelphia took their seats for their annual meeting last week in an atmosphere of ill-concealed excitement. Weeks before, the committee on awards had notified Dr. William David Coolidge, assistant research director of the General Electric Co., that he was this year's recipient of the Howard N. Potts gold medal, in recognition of his now universally used invention, the Coolidge X-ray tube. And Dr. Coolidge had replied, saying that he would present himself for the reward, and at the same time submit a demonstration called: "A...

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