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by extrapickles
3696 days ago
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There is a spectrum of "Its not possible", generally from not feasible with current tech to fundamental laws of physics say no. Things on the "not possible with current tech" side are open for someone finding a nifty trick, things leaning towards the fundamental physics side, are not. For this specific piece of tech its in the middle ground of the "its not possible" spectrum as human/animal safety and the air we breathe are the limiting factors, so if someone figures out how to very tightly generate the beam with no reflections/spillage and can detect when someone or a pet wanders into the beam, then its possible with high losses due to air. All forms of wireless power suffer from effectively the same limitations of safety and air. Magnetic/RF have problems with unwanted heating of nearby metallic objects, RF spectrum rights and beam size issues (and at high freqs, air losses), optical have mild-moderate air resistance issues and issues with reflections (very small amounts of reflection=blind people), ultrasonic have severe air loss issues and beam power limitations for safety. Physics doesn't say no to wireless power, but it does say "Only if humans are not nearby or you want small amounts of power (<1w)". Also, the best way to prove that you have conquered the limitations with a tech is to demonstrate to the world at large that it works in a practical enough manor. None of these "It's not possible" startups that I've seen have demonstrated a working prototype that people can wander up to an look at. Disclaimer: I have worked for a company that does industrial optical wireless power. |
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Wouldn't the limit be raised if you could build a system that detects whether a human is in the power path(or stray paths) to turn the power off, and do that fast and accurate ?