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'''Radio''' is the branch of telecommunication that involves the transmission of electromagnetic waves through space.

'''Radio''' is the branch of telecommunication that involves the transmission of [[electromagnetism|electromagnetic]] waves through space.

James C. Maxwell developed the first radio-wave theory in 1864. He proved, mathematically at least, that if an electrical interruption is of short distance from the point at which it occurred, there would be passage of electrical current due to "some sort of waves that move at the speed of light", in which the electromagnetic energy would travel.

[[James Maxwell|James C. Maxwell]] developed the first radio-wave theory in 1864. He proved, mathematically at least, that if an [[electricity|electrical]] interruption is of short distance from the point at which it occurred, there would be passage of electrical current due to "some sort of waves that move at the speed of light", in which the electromagnetic energy would travel.