Look. All radio and TV transmitters transmit electrical energy. A radio or TV receiver’s antenna receives a small amount of that power. The radio or TV selects a specific frequency and amplifies the power to produce an audible signal.
The principle of transmitting power through the air is not new, not far out. It is valid.
Problems:
The power received drops as the cube of the distance from the transmitter.
It is an inefficient method of sending power from one place to another.
If the transmitter power is increased, anyone who gets in the way of the signal will be roasted. This is nothing new. If you climb up a TV transmitter tower you may be roasted.
Here’s a practical application that can be used now:
Set up a receiver near a radio or TV tower and steal some of the power that is transmitted. There will be no detriment to the signal received by everyone else and you will get free power. But don’t get close or you will get roasted.
Actually, if you WERE able to set up a coil of wire near power lines and get an induced current, it would increase the inductance in the transmission line and it WOULD reduce power to everybody else.
However, you can’t really pick up any real power that way, because the magnetic field drops off way to fast.
You can light up a florescent bulb with the electric field, which IS wasted anyway, but that’s a different matter, and it’s also very weak (it just excites the atoms in the tube to glow a bit).
This device has to be tuned in frequency, and wouldn’t work just by putting it near a power line. You need a coil built precisely, and an AC current at a very high frequency, on the primary side.
The power received drops as the cube of the distance from the transmitter.It is a lot better for longer wavelengths, more like inverse square for AM Broadcast wavelenghts for instance on account of 'continuous diffraction' over the surface of the earth ...
Cube law assumes 'free space' (3-space, 3 dimension) scenario or simply point-to-point BUT a clear line of sight.