![]() ![]() ![]() The Greeks were the first to write about the origin of the light and their thinking was that it emanated from the objects and then the human vision was emitted to capture it.įrom the seventeenth century, with scientists of old age, light was not considered to travel , for them it was an instantaneous matter. This understanding was given from the observation of the eclipses. It was only Galileo Galilei who, by conducting certain experiments, questioned this principle of “instantaneity” of the distance that light travels. The understanding of the behavior of light is not less, not only for its astronomical studies, but also to understand what concerns how communications on Earth occur primarily with satellites. Now, the speed is transmitted by means other than the “vacuum” , its transmission depends on its electrical permittivity, its magnetic permeability, and other electromagnetic characteristics. There are then physical areas that electromagnetically facilitate its transmissibility and others that hinder it. ![]()
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