Resolving the extra dimensions for gravity

Abstract

<p>The weakness of the force of gravity compared to the electromagnetic force and the other fundamental forces has been referred to as the hierarchy problem. If gravity propagates in several additional spatial dimensions that are large compared to the Planck scale, the hypothesis is that gravity is stronger close-up, e.g., below a certain interaction distance the force of gravity is magnified. In the hard disk drive assembly, the magneto-resistor (MR) read sensor in the head assembly operates within 100nm of the spinning disk surface. Fourteen variable size nano-bumps and nano-pits were fabricated on a magnetic disk platen’s surface designed to be less than the Planck mass 21.77 μgrams. These nano-features were measured over the spinning disk with both piezoelectric and MR sensors. The data was validated using both atomic force microscope (AFM) and magnetic force microscope (MFM) measurements. Results are reviewed and theoretical implications are discussed. The results suggest that the force of gravity is magnified and there are two forms of gravitation. Implications to modified spacetime are discussed.</p>