Strongly recommended
Watch electricity hit a fork in the road at half a billion frames per second
Why people recommend it
AlphaPhoenix experiment measuring how current spreads along a real wire, praised for showing visually that electricity propagates as an electromagnetic wave.
Watch for: Leads naturally into the follow-up video on impedance matching
In their words
An incredible video that seems relevant to your thoughts process: Watch electricity hit a fork ...
Attie on electronics.stackexchange.com, Dec 2024. CC BY-SA.
You might appreciate this YouTube video and it's 'parent' video, which comes to the topic of impedance matching organically through looking experimentally at how (DC!)
R.M. on electronics.stackexchange.com, Jun 2025. CC BY-SA.