There can be no doubt that our
psychical force creates a movement of the ether, which transmits itself afar like all movements of ether and becomes perceptible to b rains in harmony with our own.
The transformation of a psychic action into an ethereal movement, and the reverse,
may be analogous to what takes place on a telephone, where the receptive plate,
which is identical with the plate at the other end, reconstructs the sonorous movement transmitted, not by means of sound, but by electricity.”
The mind of one person acts like a ” transmitter” of the wireless telegraph, while the mind of the other acts as a “receiver” of the same set of instruments.