Evolution of the Universe

@article{Alpher1948EvolutionOT,
  title={Evolution of the Universe},
  author={Ralph A. Alpher and Robert K. Herman},
  journal={Nature},
  year={1948},
  volume={162},
  pages={774-775}
}
IN checking the results presented by Gamow in his recent article on “The Evolution of the Universe” [Nature of October 30, p. 680], we found that his expression for matter-density suffers from the following errors: (1) an error of not tailing into account the magnetic moments in Eq. (7) for the capture cross-section, (2) an error in estimating the value of α by integrating the equations for deuteron formation (the use of an electronic analogue computer leads to α = 1), and (3) an arithmetical… 

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References

SHOWING 1-2 OF 2 REFERENCES

Expanding universe and the origin of elements

It is generally agreed at present that the relative abundances of various chemical elements were determined by physical conditions existing in the universe during the early stages of its expansion,

The Evolution of the Universe

It is concluded first of all that the relative abundances of various atomic species must represent the most ancient archæological document pertaining to the history of the universe, and that it must have been established during the earliest stages of expansion.