The nucleus
DOI: 10.1063/1.3067538
In the twenty–year period since the founding of the American Institute of Physics, nuclear physics has been advancing perhaps as rapidly as any other branch of our science. Twenty years ago the neutron had not yet been discovered, and a favored hypothesis as to the structure of the atomic nucleus was that it consisted of protons and electrons. This very fact may give some idea of the exponential rate of our progress.
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More about the Authors
Enrico Fermi. University of Chicago.