Many people accept the concept of Casimir geometry achieving peak activity in the range of low nanometers. The Casimir formula doesn't seem to make this distinction although the force under consideration in these anomalies also includes the gas atoms upon which the Casimir force must operate... that said is this assumption based on the amount of force that can be brought to bear on the surface area of a gas atom? I can see where the ratio of Casimir plate area/ spacing to the atoms surface area would have an optimum value for a static surface area of a hydrogen atom but I think Inverse Rydberg Hydrogen would be an exception to this rule where effective surface area of the H atom is reduced and the ratio for Casimir geometry can therefore also be further reduced. My pet theory would argue the atom's are actually relativistic and locally the surface area remains unchanged but the atom exists in a different , time dilated, inertial frame such that it appears contracted... the Casimir ratio [plate area/spacing] is allowed to climb and whether you believe the displacement of the atoms relative to the plates is maintained thru true contraction or relativistic contraction doesn't matter because either way Casimir force between the plates is allowed to increase... even possibly to the point where separation is less than the atomic diameter of normal hydrogen. If you eliminate the Ni-H reaction based on lack of radiation there still exist other nuclear solutions to this mystery like Beta decays and slow neutrons but I think the pendulum is finally swinging back toward ZPE as a viable candidate. In the past the H1><H2 oscillation powered by ZPE has been dismissed as too low in energy output to explain the amount of power generation claimed. A relativistic interpretation of Casimir effect could explain a much larger excess energy - an ultra catalyzer where a reversible reaction between atomic and molecular hydrogen occurs more and more rapidly from our perspective inverse to the local plate spacing. Fran