WIRELESS FREE ENERGY LIGHT

An inductor (or coil...that's the wound copper part) stores energy in the form of a magnetic field as current flows through it. A capacitor (the plastic cylindrical part of the fixture) stores energy in the form of charge. When these are sized and connected in the right way, the energy oscillates back and forth between the two until it dissipates [assuming the system is not attached to a seat of EMF, i.e.-a constant voltage source]. They are two basic components of a timing circuit. The resistor, in this case the bulb's filament, completes the circuit.

They are simply charging the system with the stripped wires, and getting enough stored energy for 4 or 5 seconds of lighting power. Notice none of the shots of the lit bulb last more than a few seconds? They just strung together a few sequences of the lit bulb, and edited out the charging.

BTW, please don't try this at home. That's a live 110V AC wire they are using to charge the system, which is not very safe. AC current is more lethal than DC, and it only takes a few milliamps to stop your heart. A 110V AC outlet can provide 15 or 20 amps before blowing a fuse or tripping a circuit breaker, which can be LETHAL depending where it enters and exits the body.