How can we use this in #AmateurRadio. 🤔
An #Electromagnetic #Vortex Cannon, Finally
"Researchers say they’ve found a way to create a freely propagating vortex ring, like a smoke ring, but with electromagnetic waves. Why does this even matter? What might this discovery be used for? Let’s take a look."
https://www.youtube.com/watch?v=oruA427cpTg
[#]Physics #News #Science #Tech #SabineHossenfelder
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@KJ7OFH There are two types of vortex beams: non-diffracting (Bessel) beams and orbital angular momentum (Laguerre-Gauss) beams. The latter type can be somewhat resistant to atmospheric turbulence and so perhaps such a beam might resist fading better than an ordinary spherical wave. But the antenna must typically be at least a few wavelengths across so it's probably only practical at UHF and microwave frequencies.
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