Researchers have figured out how make shaped drone rotors that convert audible and ultrasound frequencies into stable mechanical spinning motion, leading to tiny drones that can be completely silent. While scary-sounding (no pun intended) it’s unclear how usable these would be in the real world, since a line-of-sight source of sound waves has to be provided.
several sound-responsive structures could be built into a single flexible device, with each one reacting to a different sound frequency. “This would allow specific parts of the device to move, bend or vibrate, potentially leading to aerodynamic robotic devices that can change shape in response to sound,” he says.
I’m picturing Yondu’s whistle-powered dart.
These nano-soldiers are attracted to and powered by the sound of your screams.
This would be highly efficient.
Yes just like this.
“silent”
“powered by sound waves”
Pick one.
Of course it’s silent. It’s doubtful our sonar would pick it up, and if it did, it would sound like whales humping, or some kind of seismic anomaly
They’re powered by sound from other sources but don’t create sound themselves…no?
You claim that your kite operates without making any noise, and yet it is powered by wind, which is quite noisy.
Kites are noisy.
flap flap flap…
Humming string etc.
there is sound we can’t hear. there is also light we can’t see.
I feel bad for severe schizophrenics because now they’ll have trouble telling what’s actually real or what’s just paranoia.
WTf is wrong with these people? why are you making shit they will useagainst us? enslave us with?
We are so cooked
Yes the sweet release of grey goo
It looks like grey goo and skynet are competing to see who will be the next apocalypse.
Silent
powered by sound
So not silent? 🤔
> doesn’t glow
> powered by light
🤔
> doesn’t shock people
> powered by electricity
🤔
Huh? External sound does not mean the object produces sound.
