Resolving the extra dimensions for gravity

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