31. A stronger attractive force was postulated to explain how the atomic nucleus was bound despite the protons'mutual electromagnetic repulsion. 32. Thus, in the given model, the average person dies under the same law as an unstable atomic nucleus decays. 33. For example, the differential cross section of Rutherford scattering provided strong evidence for the existence of the atomic nucleus . 34. The first information about the atomic nucleus was obtained at the beginning of the 20th century by studying radioactivity. 35. The title refers to the size of the atomic nucleus in relation to the size of the whole atom. 36. At this time, physicists were puzzled by beta decay, in which an electron was emitted from the atomic nucleus . 37. Radioactive decay is the process in which an unstable atomic nucleus loses energy by emitting ionizing particles and radiation. 38. An example of the first situation is an atom whose electrons only experiences the Coulomb force of its atomic nucleus . 39. In groups of three, scientists believe, they combine to form the protons and neurons that combine in the atomic nucleus . 40. There he also associated with I . I . Rabi and others who had made discoveries concerning the atomic nucleus .
