What, then, is light according to the electromagnetic theory? It consists of alternate and opposite rapidly recurring transverse magnetic disturbances, accompanied with electric displacements, the direction of the electric displacement being at the right angles to the magnetic disturbance, and… — James Clerk Maxwell Copy Share Image
“agreement of the calculated velocity of propagation with the measured speed of light that caused Maxwell to write, ‘‘light is an electromagnetic disturbance propagated through the field according to electromagnetic laws.” — Anonymous Copy Share Image