Editorial Note. — In the following interesting article, Dr. Tesla presents a theory to account for the diminished intensity of wireless signals on account of bright sunlight, which differs radically from the commonly accepted assumption that the effect is due to the ionization of the upper layers of the atmosphere by the ultra-violet rays of the sunlight. It will also be noticed that he does not accept the notion that the signals are transmitted by means of Hertzian or electro-magnetic waves, but explains the phenomenon on an altogether different basis.
