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Sure. But if one assumes it's not complete snakeoil, these may not have good enough characteristics for what they are trying to do. IE if you believe her, it i

Sure. But if one assumes it's not complete snakeoil, these may not have good enough characteristics for what they are trying to do. IE if you believe her, it implies the ones they need to make are not that cheap. (Note: I'm fairly familiar with ultrasonics, and certainly the price varies depending on what you are trying to do. The ones in my ultrasonic cleaner are not the same as the ones i use do to sensing tasks)

jacquesm 9y ago
True, the characteristics matter a lot. Even so, a principle demo would require only two transducers and a simple lab setup rather than some fancy stage managed demo for reporters to charge a phone. And it would carry a lot more weight with the tech crowd, they keep on doing these demos that scream 'snakeoil' even if there is an outside chance that it is not. And if the transducers they need to make are not cheap then the whole project is dead in the water anyway. Wireless charging with a custom backing or sleeve over a phone that costs a fair amount of money coupled with a large array of expensive transducers every so many meters in whatever space you're trying to use the system in would likely not take off, assuming they can get the efficiencies working in the first place.