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.
About 51% of solar energy reaching the earth is absorbed by the Earth's surface. Incoming solar radiation: 100% Reflected by the atmosphere: 6% : Absorbed by â¦ the atmosphere: 16% Continuing incoming solar radiation: 78% Reflected by clouds: 20% : Absorbed by clouds: 3% Continuing incoming solar radiation: 55% Reflected by the earth's surface: 4% : Absorbed by the earth's surface (lands and oceans): 51% (Source: NASA.)