how EM wave travel in vacuum?

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rajeshmarndi

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"Changing magnetic flux will produce electric field in the near space, and changing electric flux will produce magnetic field in the near space. No other media is required.
So changing electric field at one point A produce changing magnetic field at near by point B, and changing magnetic field at point B will produce changing electric field at near by point C, ... so EM wavr is formed."
Isn't this phrase wrong, as changing EF will not produce in the nearby space but just perpendicular to it and not ahead and therefore in this way, doesn't help in its propogation
 
I only can say, read
'the fabric of the cosmos'
by Brian Greene

there is more, much more to the cosmos than we know, think or believe it is
 
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