There has to be a battery or electrical device under the table. Conservation of energy is violated thus this device is not possible.
Light bulbs don’t use that much energy—all of our appliances do.
.
Correct. The device is a fraud.
Actually, all the guy has to do is keep moving the bulb in the magnetic field. This generates enough charge to keep the bulb lit for a few seconds. The longest the bulb remains stationary and lit is about three seconds in the video.