Mechanism of GRAVITY Generation

This is a study of the mechanism of gravity generation. Why do apples fall?Gravity was a pushing force, not a pulling force. Given a priori assumption that space as a vacuum has a physical fine structure like continuum, it enables us to apply a continuum mechanics to the so-called "vacuum" of space. The pressure field derived from the geometrical structure of space is newly obtained by applying both continuum mechanics and General Relativity to space. The apples on the Earth will not be pulled by the Earth and fall, but will be pushed and fall in the direction of the Earth due to the pressure of the field in the curved space area around the Earth. This book is an attempt to explain the cause of gravity by applying the mechanical structure of space to General Relativity.