I believe the human eye in it's daylight mode has peak sensitivity to ~555nm wavelengths (ie green)

I've already checked you out commander ;-)

What if it turns on for a very short interval every so often and detects whether there is a power drain. The change in the drop in voltage across the unit gives a clue as to the state of need. Essentially it becomes a sampling frequency and threshold decision problem.

The reason UV radiation causes cancer is primarily because it interacts with (I believe) the CG linkage in your DNA, excites it, and causes it to randomly bond with a nucleotide adjacent to it. Various repair enzymes are responsible for fixing this obvious and easily invertible error, but sometimes they fuck up, thus, cancer.

Gamma radiation is stronger, so I imagine it simply causes all sorts of fucked up ness to happen to various cell components.

However, below the UV range, your cells absorb the power if certain chemical bonds resonate with the frequency, and the vast majority of it is transduced to kinetic energy (ie heat) if it is below the bond energy (which is usually the case). Thus, you mostly need to watch out for thermal effects. If you dump too much energy in, you'll get irritation and burns.

I'll let the rest of you figure out if this means the pads are bad because I am exhausted.

Do you know whether the medical applications of the directed antennae are being realized presently? Is it simply a matter of getting all the side effects research done?

What if you put a capacitor in series with the inductor so that when it's not being used, it breaks the connection AND stores some nice power for you to use for some reason. Perhaps a better solution would be better done with a digital voltmeter controlling a transistor.