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Why cant information be sent faster than light? Couldn't you just increase a photon's speed by using some sort of electrical or magnetic fields, and send the information that way?
Question Date: 2007-08-04
Answer 1:

Photons basically are combinations of electromagnetic fields, and you can't make the electromagnetic fields propagate faster than light. This is due to relativity. Recall that things not traveling faster than light are a property of the universe for anything, including electromagnetic fields.


Answer 2:

Fields cannot propagate faster than light. This applies not only to electromagnetism but also gravity and the other forces, too: the speed of light is a constant of the universe that determines how quickly energy and information can travel. It is because of this constant that light travels at a speed at all.



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