Hydrogen atom (non relativistic) hydrogen atom was solved for the first time within Feynman's path integral formulation of quantum mechanics. This work greatly extended the range of applicability of Feynman's method. Hydrogen atom A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe. In everyday life on Earth, isolated hydrogen atoms (called "atomic hydrogen") are extremely rare. Instead, hydrogen tends to combine with other atoms
Empire of the Atom Empire of the Atom Empire of the Atom is a science fiction novel by Canadian American writer A. E. van Vogt. It was first published in 1957 by Shasta Publishers in an edition of 2,000 copies. The novel is a fix-up of the first five of van Vogt's Gods stories which originally appeared in the magazine "Astounding". The remaining Gods stories are collected in "The Wizard of Linn". Author and critic James Blish observed that the plot of the Gods stories resembled that of Robert Graves' "Claudius" novels. Author and critic Damon Knight said that the plot was "lifted almost