Experimentum crucis for Electromagnetic Response of Metals to Evanescent Waves and the Casimir Puzzle

It is well known that the Casimir force calculated at large separations using Lifshitz theory differs by a factor of 2 for metals described Drude or plasma models. We argue this difference entirely determined contribution transverse electric (s) evanescent waves. Taking into account there lack experimental information on electromagnetic response to low-frequency waves, we propose an experiment measuring magnetic field oscillating dipole spaced in vacuum above thick metallic plate. According our results, lateral components are governed waves and may vary orders magnitude depending model describing permittivity plates used calculations oscillation frequency dipole. Measuring component typical parameters designed form 1-mm coil, one could either validate disprove applicability as function metal range This will elucidate roots puzzle lying fact theoretical predictions contradiction with high-precision measurements exceeding 150 nm. Possible implications suggested wide topics optics condensed matter physics dealing discussed.