Climbing robot can scale walls on a supersonic stream of air, won't leave fingerprints behind

There are plenty of wall climbing robots roaming the Earth, but few can scale heights as gracefully as this little guy can. Developed by researchers at the University of Canterbury in New Zealand, this bot can wind its way across any glass, metal or cloth terrain, without even touching its pods to the surface. The secret lies in Bernoulli's Principle, which states that as the speed of a fluid increases, its pressure decreases. This phenomenon also applies to streams of air, which, when moving at high speeds around of a circular gripper, can create a vacuum strong enough to hold things without actually touching them. In this case, air shoots out of the robot's feet at more than 2,000 miles per hour, creating enough pressure to lift the craft, while holding it close to the wall. The technology isn't new, but rarely can it support the weight of an entire device -- let alone the extra cargo that this climber's non-contact adhesive pads can hold. Researchers say the supersonic grippers will be available in "some months" and will probably cost "a few hundred dollars." As for the bot itself, Canterbury's engineers envision it being used for industrial inspections -- though the more we think about it, the more we realize just how dirty our windows are. Video after the break.

DVice

IEEE Spectrum

Asius' ADEL earbud balloon promises to take some pressure off your poor eardrums

Listener fatigue: it's a condition that affects just about everyone who owns a pair of earbuds and one that myriad manufacturers have tried to mitigate with various configurations. According to researchers at Asius Technologies, though, the discomfort you experience after extended periods of earphone listening isn't caused by faulty design or excessively high volumes, but by "acoustic reflex." Every time you blast music through earbuds, your ear muscles strain to reduce sound waves by about 50 decibels, encouraging many audiophiles to crank up the volume to even higher, eardrum-rattling levels. To counteract this, Asius has developed something known as the Ambrose Diaphonic Ear Lens (ADEL) -- an inflatable polymer balloon that attaches to the ends of earbuds. According to Asius' Samuel Gido, the inflated ADEL effectively acts as a "second eardrum," absorbing sound and redirecting it away from the ear's most sensitive regions. No word yet on when ADEL may be available for commercial use, but head past the break for a video explanation of the technology, along with the full presser.

Gizmag