If annihilation of matter occurs, the process is merely that of unbottling imprisoned wave-energy and setting it free to travel through space. These concepts reduce the whole universe to a world of light, potential or existent . . . . Material particles, she said, were infinitely divisible centers of force , and matter could therefore exist in infinitely varying degrees of density. Our physical senses have been evolved to perceive only one particular plane of matter, which is interpenetrated by countless other worlds or planes invisible to us because composed of ranges of energy-substance both finer and grosser than our own. Modern science has analyzed matter down to the point where it vanishes into wisps of energy.
Energy is said to be a measure of motion or activity.
It is a truism that there can be no motion without something that moves. Scientists in the last century believed that wave-motion took place in a universal medium called the ether. Modern physicists believe that underlying the material world there is a quantum field, also called the quantum void or vacuum. Scientists assert that the quantum field is non-material, but deny that it is mere nothingness. Everything is relative.