Sentences with phrase «at ultrasonic frequencies»

On an even more concerning note, playing back audio at these ultrasonic frequencies requires equipment that costs a total of just $ 3, minus the cost of a smartphone; anyone with the technical knowledge can, therefore, make use of the vulnerability.

Already they have developed a preliminary prototype «microphone eardrum,» but so far it works only at ultrasonic frequencies.

A more sophisticated approach involves vibrating the screen in and out at ultrasonic frequencies, says Colgate.

To woo females, male mice whistle complex songs at ultrasonic frequencies.

These humidifiers create a fine mist by exciting and evaporating water using a small diaphragm that vibrates at ultrasonic frequencies.

Ultrasonic Humidifier: In this case, instead of the fan there is a little metal diaphragm, which vibrates at ultrasonic frequency, breaking the water into small drops, which then becomes a vapor mist.

The nebulizer vibrates at an ultrasonic frequency to create mist that easily dissipates into the air, rather than droplets that fall to the ground.

Not exact matches

By incrementally varying the frequencies of the ultrasonic waves, the duo can pinpoint the frequency at which a target resonates — like the amplification of a particular hum in a shower stall.

Klimley became a pioneer in both, setting up stations for detecting ultrasonic acoustic tags that emitted signals at frequencies far beyond what the human ear could sense.

Different units produce sounds of different frequencies within the ultrasonic range, and project these sounds at varying volumes.