Well it wasn't my question of course Kalee and there's probably more going on in this field than we hear about.
. I think the tooth brush was just a "soft start" re the principles for a general audience and very clearly described. I might have given up there but the Tesla section was good and also well set out. The introduction pointed out that it really wasn't about the company that makes electric cars [although that technology, in itself, seemed to be going nowhere until just a few years ago
]. I thought that the use of high frequencies in power transmission was made very understandable for someone without a technical background. There are many different opinions about Tesla but his technology was both vintage and contemporary at the same time as far as I can see. It may well be not be hugely that efficient at present but it can depend where you look
. I wonder what others might think?
Dave W
. .