I think it's just two right angle rotations that cancel each other out.  The first is the ciculation of the charged particles at right angles to the magnetic field.  The second is the right angle propogation of the electromagnetic waves induced by those circulating particles.  


From: Giszmo at 08/23 11:36

> Each of these details makes sense. I studied physics after all 😅 But it's still not intuitively clear. I guess I need to get an intuition for synchrotron radiation.
> 
> I asked Chat-GPT about the beam's focus and tend to doubt it's correct with this example:
> 
> https://i.nostr.build/9MKHMV2m0a2moa5h.png

CC: #[4]