The Helium-4 Atom
The helium atom is the second simplest atom (hydrogen is the simplest), but the extra electron introduces a third "body", so that solution to its wave equation becomes a "three body problem", which has no analytic solution. However, numerical approximations of the equations of quantum mechanics have given a good estimate of the key atomic properties of helium-4, such as its size and ionization energy.
Read more about this topic: Helium-4
Famous quotes containing the word atom:
“The flame from the angels sword in the garden of Eden has been catalysed into the atom bomb; Gods thunderbolt became blunted, so mans dunderbolt has become the steel star of destruction.”
—Sean OCasey (18841964)