why is it a ship sailing in a straight line at a fixed velocity creates waves on the shore, but dc current with a fixed value cannot create an EM wave?
In: Physics
That is a very intelligent observation!
There is one important difference.
A ship sitting in a lake raises the level of the lake, but creates no waves. Once it starts moving it creates waves.
A wire with a static current creates no waves, **but if you move the wire the EM waves appear!**
The proper analogy to a moving ship is a moving wire.
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