"From the definition of energy it is the potential of the Universe. When matter is in a phase allowing it to be active, it effects other quantities of matter at a distance. The method of transfer is known to be by means of wave motion. Each impulse moves from the omitting to the receiving mass on a rigorously straight line. One continuous set of oscillations in this right line is called a ray. Each negative or Thomsonian corpuscle makes a double vibration to and fro like a pendulum straight across the direction of the ray; i.e., at right angles to it, the corpuscles moves over and returns to its original position it had before the excursion. Since the corpuscles are negative and can be drawn out of their original straight path by the action of magnetism, the entire wave motion of the Universe is electro-magnetic. This is what Maxwell prophesied many years ago. Thomson fulfilled the prophecy." [source unknown]
See Also
13 - Chart Defining the Arrangement of the different Atoms and Corpuscles of Matter
corpuscle
J. J. Thomson
Particles and Corpuscles