The Manifestations of Mass

Abstract

The existence of visible and dark matter, and the continued direct undetectability of dark matter, necessitates a theoretical investigation into the nature of inertial mass that constitutes visible and dark matter. It is proposed that inertial mass is manifested dually: materially, as extrinsic inertial mass and immaterially, as intrinsic inertial mass. Visible matter experiences inertia when accelerated because the applied real force on the material extrinsic manifestation of inertial mass is not cancelled by the equal and opposite inertial pseudo force on the immaterial intrinsic manifestation of inertial mass. It is also proposed that all visible matter experience inertia all the time in cosmological acceleration, because spacetime real force on extrinsic inertial mass is not cancelled by the inertial pseudo force on intrinsic inertial mass. Visible matter in gravitational freefall does not experiencing inertia because inertial pseudo force associated with intrinsic inertial mass is cancelled by the pseudo-like gravitational force associated with gravitational mass. Immaterial intrinsic inertial mass also exists independently as intrinsic inertial mass objects, which are in cosmological freefall and do not experience inertia, because of cancellation between spacetime pseudo-like force and inertial pseudo force on intrinsic inertial mass. Immaterial intrinsic inertial mass objects in cosmological freefall are the dark matter in the universe.