IN the issue of NATURE of September 5, 1925, p. 357. Messrs. Breit and Tuve give a method for determining the height of the Heaviside Layer at night. It consists essentially in transmitting a series ...

ONE of the most fruitful methods of investigating the Heaviside layer is that originated by Breit and Tuve, in which a series of short impulses of the order of 0.2 of a millisecond in duration are ...

To explain radio, among other natural phenomena, physicists have imagined a stretchy blanket of ions encasing the Earth. This is the Kennelly-Heaviside Layer, named after Harvard’s Bombay-born ...