Kennelly-Heaviside layer

The Kennelly-Heaviside layer, also known as the E region or just as the Heaviside layer, named after Oliver Heaviside, is a layer of ionised gas occurring at 90-150km in above the ground — one of several layers in the Earth's ionosphere. It reflects medium-frequency radio waves, and because of this reflection radio waves can be propagated beyond the horizon.

References

• Corum, J. F., and Corum, K. L., "A Physical Interpertation of the Colorado Springs Data". Proceedings of the Second International Tesla Symposium. Colorado Springs, Colorado, 1986.
• Grotz, Toby, "The True Meaing of Wireless Transmission of power". Tesla : A Journal of Modern Science, 1997.