The National Institute of Standards and Technology (NIST) gives the mass of the simple Bohr Hydrogen atom (H-1) as less than the sum of NIST values for a free electron rest mass plus a free proton rest mass. NIST is likely correct, but that contradicts a few writings by this author and some other scientists too. When a distant electron travels very fast toward its orbit around a proton, one might think that causes a "relativistic" mass increase. While there are externally forced ways to increase mass with increased velocity, yet for isolated systems, their internal potential energies may act to increase the velocity of their parts without the systems mass increasing. We discuss that and a few of the many related and profound issues in this paper.
