That graph animation is pretty mind blowing to watch, especially knowing it’s captured off real data not just the theory.<p>All his videos are great in general.
Amazing, but that's a lot of channels for a cheap oscilloscope. I'm curious how he did that, I don't see any wiring. Also, he missed an opportunity to bring in the rudiments of transmission line theory -- a twisted pair is a continuum limit of tiny coupled capacitors. And these same kinds of waves can propagate in the vacuum, which is a kind of universal 3D grid of coupled harmonic oscillators. In which case we call the waves photons!