Enrico Fermi: The Master Scientist - download pdf or read online

By Jay Orear

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This was the first symptom of the cancer that cost him his life four months later. This letter from Fermi may have been our first indication that Enrico was having a serious health problem. One of the duties of a thesis adviser is to teach the student how to do good scientific writing. Fermi took this responsibility seriously. He made me go through four or five different drafts. He took special delight each time he found a spelling or grammar mistake. One thing he taught me was to be overly generous about giving references to other people in the same field.

Fermi and Anderson had used scintillation counters in their experiments. Fermi, as usual, gave full support to Art and me. This experiment worked and I was able to confirm the Fermi-Anderson result. D. I was able to extend my techniques further and go to lower energies and smaller angles than could be reached by scintillation counters. The smaller angles permitted me to see smaller-angle pion-proton elastic scatterings than could be seen using scintillation counters. I was able to do a better job on the s-wave phase shifts than the counter experiments.

I sat in on the course and took detailed notes. My notes reveal two more examples of what might be called intuition. On my pages dated April 11, 1953, Fermi explains the odd intrinsic parity of the pion as two spin 1/2 sub-particles in an L=1 orbit around each other and with the intrinsic spins and orbital angular momenta opposed to give a total spin zero for the composite particle. A spatial inversion would give a change in sign or odd parity for the composite. This is the present quark model of the pion years ahead of its time.

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Enrico Fermi: The Master Scientist by Jay Orear


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