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Radioactivity and the Atomic Nucleus

  • C. H. Holbrow
  • J. N. Lloyd
  • J. C. Amato

Abstract

In 1896 Henri Becquerel discovered that compounds containing uranium emit radiations that can penetrate opaque paper and even thin sheets of metal and cause photographic plates to darken. Like x-rays, these emissions ionized air and caused electroscopes to discharge, but unlike x-rays, they occurred without any external source of excitation. Becquerel’s student, Marie Curie, named this spontaneous emission of ionizing radiation “radioactivity.”

Keywords

Atomic Nucleus Alpha Particle Radioactive Decay Photographic Plate Uranium Atom 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Reference

  1. 3.
    H. Geiger and E. Marsden, “The laws of deflection of α-particles through large angles,” Phyil. Mag. 25, 604–623(1913).Google Scholar

Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • C. H. Holbrow
    • 1
  • J. N. Lloyd
    • 1
  • J. C. Amato
    • 1
  1. 1.Department of Physics and AstronomyColgate UniversityHamiltonUSA

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