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 ...

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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 ...

IF the carrier wave of a wireless transmitter he increasing steadily in frequency, then a given receiving station will in general pick up two waves differing in frequency. One of these waves will have ...

Writer Rachel Chan shares her experience of caring for her terminally ill cat, Spooky, and being her “mama” until the very end. Spooky the cat. (Photo: Rachel Chan) “Up, up, up, past the Russell Hotel ...