A shotgun is obviously the more satisfying approach, but researchers at the Korea Advanced Institute of Science and Technology have found a simpler way to knock drones out of the sky—by targeting their onboard gyroscopes with nothing but sound.
It looks like the kind of spit you'd roast a pig on for some sort of tropical luau cookout. Except instead of flames, there is a supersensitive laser rangefinder. And rather than a suckling pig sizzling, there is a clown head seemingly singing. Or a roll of paper towels.
You might think the trippy animated visualizations in your media player are the best way to see your music. But astronaut Don Pettit has found a better way—and all it requires is a small set of speakers, a blob of water, and a space station 250 miles above the Earth.
Japanese electronics company Kyocera has developed an innovative new transducer to replace outmoded—and underperforming—speakers in a phone.
How do you make an underwater invisibility cloak? You start by creating a device that can manipulate sonar waves. This small cylinder, developed by researchers at the University of Illinois, does just that.
Neurologists have built an ultrasound device which uses focused sound waves to destroy stroke-causing blood clots in brains. The procedure is non-invasive—requiring no drugs or surgery—and is already being tested on patients.