That these mistakes are oft repeated doesn't make them any less wrong.
Absolutely it does make them less wrong. Are you going to tell me that using phrases such as "to curry favor" and "moot point" are incorrect because a long time ago someone misheard someone else say "to curry Favel" and "mute point"? (see: http://blog.oxforddictionaries...)
Everyone should agree that languages evolve over time. For some reason, however, some people get really indignant when they observe the actual mechanisms by which languages evolve up-close.
Cool, does that mean I can get infinite power out of it as long as I can get the receiver and transmitter arbitrarily close to each other? Sounds like each time I cut the distance in half I get twice the power. Zeno saves the day!
If distance=0 represents a theoretical "full power", then how do you double that distance to get the half (or quarter) power according to the inverse law? If some distance > 0 represents "full power", then getting the TX and RX that close ought to be free of this nasty inverse square business.
Induction charging, even at its best, is only about 40% efficient and that's practically touching coils together.
Sure, but that loss isn't due to any inverse square law, is it? Like you said, the coils are practically touching. The op was implying that all wireless charging is stupid because loss increases with the square of the distance. I'm saying (with no research and little expertise in the area) that all of the wireless charging I've seen operates in the near field; and while I don't know how much that 40% efficiency number you gave could be improved upon, I doubt that the dominating factor in the loss is distance in this specific case.
The Inverse Square Law fully applies to any sort of wireless charging because physics works.
I'm pretty sure the fact that most wireless charging systems operate in the near field and rely and near field effects means that the inverse square law doesn't "fully apply". Even if it does in a technical sense, the distance between transmitter and receiver is very small.
Top Ten Things Overheard At The ANSI C Draft Committee Meetings: (8) I'm on the committee and I *still* don't know what the hell #pragma is for.