细节
EINSTEIN, Albert (1879-1955). Autograph letter signed ('Papa') to his sons Hans Albert and Eduard ('Liebe Buben'), Buenos Aires, 23 April 1925, numerical annotations on verso in hand of Mileva Einstein-Maric, one page, 4°, printed heading of Bruno John Wassermann.
Gravitation and electricity. Einstein has been in Buenos Aires lecturing and is exhausted; previously he had been in Cordoba, and is to proceed to Montevideo and Rio, returning home at the end of May. He asks after his sons' news and urges them to write: 'For myself I have had an interesting idea for understanding the relationship between electricity and gravitation'.
Einstein was in Buenos Aires lecturing at the Argentine State University. His continual lecture tours in the first half of the 1920s formed a repeated interruption to his struggles with the Unified Field Theory.
Gravitation and electricity. Einstein has been in Buenos Aires lecturing and is exhausted; previously he had been in Cordoba, and is to proceed to Montevideo and Rio, returning home at the end of May. He asks after his sons' news and urges them to write: 'For myself I have had an interesting idea for understanding the relationship between electricity and gravitation'.
Einstein was in Buenos Aires lecturing at the Argentine State University. His continual lecture tours in the first half of the 1920s formed a repeated interruption to his struggles with the Unified Field Theory.
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