Did you read the article? It was not about ultrasonic power delivery. I’d descri... | Hacker News

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		JK-Swizzle 23 days ago \| parent \| context \| favorite \| on: Batteries Not Included, or Required, for These Sma... Did you read the article? It was not about ultrasonic power delivery. I’d describe it more as tuned ultrasonic bells.

jacquesm 23 days ago [–]

Ahh I completely misunderstood the directional flow, thank you for the correction.

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