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To understand this process, one should know that an atomic nucleus normally consists of positively charged protons and neutral neutrons, which are surrounded by several atomic shells occupied by negatively charged electrons.
In such atoms, the electron is so far away from the nucleus that the latter's size is negligible, and the electron would accelerate less in its high-flung orbit, reducing the effects of "virtual photons" it emits and allowing theoretical uncertainties to be as small as tens of parts in a (a) In a Rydberg atom, an electron (black dot) is far away from the atomic nucleus (red and grey core).
The story, which has fascinated the author since boyhood, begins with the 1909 discovery of the atomic nucleus, sometimes compared in its relation to the atom to a fly in a cathedral.
Around 15bn years ago the entire universe was compressed into the confines of an atomic nucleus.
This Moseley attributed to the increasing positive charge on the atomic nucleus as the atomic weight of the element increased.
Of particular interest is the investigation of so-called neutron halos and neutron skins, In which, On average, One or more neutrons are located much farther from the center of the atomic nucleus than would be expected.
Nature's rarest type of atomic nucleus is not giving up its secrets easily.