I’ve seen radio waved depicted in two different ways that seem at odds with one another. the first is something like [this](https://upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Wireless_tower.svg/75px-Wireless_tower.svg.png), with the waves spreading out from a point source in all directions. the second is like [this](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Cross_linear_polarization.gif/330px-Cross_linear_polarization.gif) with the radio wave moving in a “tube” constrained by its own parameters.
since we can’t see them, radio waves remain a bit abstract, but both of these visualizations can’t be correct at the same time… or can they? can someone as to what the real picture would “look” like?
many thanks!
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