Kennelly–Heaviside layer
The Kennelly-Heaviside layer was named after scientists Arthur Edwin Kennelly and Oliver Heaviside. Its existence was shown in 1924 by  Edward V. Appleton, an English physicist who received the Nobel Prize in the year 1947. The Kennelly-Heaviside layer or E region is part of the ionosphere, the top part of the Earth's atmosphere which is full of electricity and magnetism, 90 to 150 kilometers from the Earth's surface. The layer is capable of reflecting medium shortwave electromagnetic radiations, or the EM radiations whose frequency ranges between 300 kHz to 3MHz.