Premises, mass, virtual mass, inertia, gravity
     The quantum medium view is based on two simple premises. Evidence and reasons for the premises are provided here.

      Premise I: A quantum medium is present everywhere in the universe and the mass/energy of the universe consists of systems of oscillations in the medium. Individual energy quanta (e.g. photons) are propagated through the medium at a constant absolute speed (ca) when not impeded directly by mass/energy (e.g. air, water) or indirectly by nearby large concentrations of mass/energy (e.g. stars, galaxies).
      Note: The qm view and supporting evidence indicate that electrons, quarks, and other "particles" having rest mass are all dynamic systems of oscillations in the qm. This view is consistent with the thinking of Paul Dirac who showed that electrons and other particles can be excitations of the ether medium that Maxwell assumed was necessary for the propagation of electromagnetic energy. The nature of the oscillations or excitations in the medium is presently unknown. The quantum medium does not impede the motion of any form of mass/energy through the medium, as explained here.

      Premise II: Every concentration of mass/energy (e.g. person, planet, star, galaxy) decreases the speed at which energy (e.g. photons) is propagated through the quantum medium in its vicinity. (The speed is a simple function of the magnitude of the mass/energy, the distance from the mass/energy, and the Newtonian gravitational constant, as specified on pages 28 and 30).
      Note: The cause of this photon-slowing effect is presently unknown. It might be radiation or other disturbances in the qm caused by all mass/energy.

     You have seen some of the consequences of Premise I and that the consequences cause the same observed phenomena predicted by spacetime theory. The fact that the consequences reveal logical physical causes for the phenomena and are based on logical premises and show that spacetime theory is probably based on an illusion of constant light speed in all inertial frames, indicates that the qm view should be better understood so its plausibility and the plausibility of relativity theory become more apparent. The premises have other consequences that show the following.

	why a body's absolute mass increases as its absolute velocity increases, and why observers(c) determine that a body's mass increases when the body's velocity relative to the observer increases.
	why bodies resist having their velocities changed (i.e. why bodies have "inertia").
	how Newton's second law of motion can be modified slightly to make it applicable when bodies are moving with any possible speeds (contrary to orthodox teaching that the law is not applicable when speeds are high).
	The consequences of Premise II show why bodies experience a mutual "gravitational" attraction.

     These and other consequences of the above two premises are explained on the following pages.