93. When the current from the battery flows through the primary coil it magnetizes the soft iron core and as the microphone varies the strength of the current the high voltage alternating currents set up in the secondary coil of the induction coil are likewise varied, when they are impressed upon and modulate the oscillating currents.
"The Radio Amateur's Hand Book"
A. Frederick Collins
It is not the body which magnetizes or is magnetized; it is the mind; and these effects are produced outside of the physical system.
"Studies in the Out-Lying Fields of Psychic Science"
Hudson Tuttle