Electronic speed control. An electronic speed control or ESC is an electronic circuit with the purpose to vary an electric motor's speed, its direction and possibly also to act as a dynamic brake.
The ionosphere is the layer of the atmosphere that reflects radio waves. This effect is caused by the ionization, or electrical charging, of the gas particles present in the upper atmosphere by... The ionosphere is the layer of the atmosphere that reflects radio waves. This effect is caused by the ionization, or electrical charging, of the gas particles present in the upper atmosphere by X-rays and ultraviolet rays emitted by the sun.
Once the Sunâs energy reaches Earth, it is intercepted first by the atmosphere. A small part of the Sunâs energy is directly absorbed, particularly by certain gases such as ozone and water vapor. Some of the Sunâs energy is reflected back to space by clouds and Earthâs surface. Most of the radiation, however, is absorbed by Earthâs surface.