Addition to the former letter.
Sem títuloThis reply to Pauli's letter, concerns the representation of the wave equation with spin.
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Heisenberg agrees with Pauli's interpretation of spin-inertia as "damping". He discusses the synopsis for the talk at the Solvay congress.
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Heisenberg sends Pauli his part of the report for the Solvay congress, and adds technical details.
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Pauli gives a synopsis of his planned paper at the Solvay congress. He makes more comments on Heisenberg's damping-terms in the scattering of mesons by protons.
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Pauli wants to continue his work with Kemmer on systems of hyper-complex numbers. He asks questions about application of quantum theory (perturbation) and on scattering of neutral mesons.
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Pauli continues with his calculations with hyper-complex numbers. He adds some remarks on "neutretto"-scattering and the theory of mesons.
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Heisenberg thanks Pauli for his part of the report and finds it a bit too difficult in certain parts. He agrees with Pauli's criticism of de Broglie's theory of photons. He was satisfied with his visit to the U.S.A.. He talks about some wrong results by Bethe in his attempt to explain the quadrupolmoment of the deuteron.
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Pauli writes of the decision to postpone the congress because of the political situation.
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A short addendum to the last letter.
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