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Figure10 gif

Figure10 gif

Summary: to an electromagnetic wave the electric field and the magnetic field In free space the directions of the fields are at right angles to the direction of the propagation of the wave The drawing below shows part of a wavefront as it would appear to an observer at the point indicated in the drawing The wave is moving directly out of the page One half a period later

Image Dimensions: 595 x 405

Image originally found here.