Uploaded January 2026 | Updated September 2026, 2 weeks ago
A simple light switch hides a weird truth: power is not carried by traveling electrons the way many lessons suggest. This video breaks down the “moon-long wires” puzzle, then uses Maxwell’s fields and Poynting’s vector to map where energy actually goes. It shows why AC can deliver steady power even when charges only wiggle, why transformers pass energy across gaps, and why early undersea cables smeared dots and dashes. It also explains electron drift speed and why a bulb can respond in nanoseconds, not seconds. After watching, everyday wiring looks like guided waves in space. #electricity #physics #engineering #powergrid #poyntingvector
A simple light switch hides a weird truth: power is not carried by traveling electrons the way many lessons suggest. This video breaks down the “moon-long wires” puzzle, then uses Maxwell’s fields and Poynting’s vector to map where energy actually goes. It shows why AC can deliver steady power even when charges only wiggle, why transformers pass energy across gaps, and why early undersea cables smeared dots and dashes. It also explains electron drift speed and why a bulb can respond in nanoseconds, not seconds. After watching, everyday wiring looks like guided waves in space. #electricity #physics #engineering #powergrid #poyntingvector
