Sentences with phrase «by ultrasonic sound»
Types of portable humidifiers include those that are ultrasonic, producing a cool mist by ultrasonic sound vibrations, or impeller humidifiers, which use a high - speed rotating disk or fan to make the mist.
https://www.verywellfamily.com/ Not exact matches
Bubbly Gone Flat Water bubbles created by ultrasonic waves can collapse fast enough to generate a flash of light [see «Sonoluminescence: Sound into Light»; SciAm, February 1995].
The most popular of these products is the PetSafe Ultrasonic Outdoor Bark Control which looks like a bird house, but emits an ultrasonic sound heard only by dog.
It works by emitting sonic and ultrasonic sound waves which dogs find offensive.
There are several indoor and outdoor devices that use a loud sound or ultrasonic sound (can not be heard by humans) to stop barking.
For instance, bark collars may train a dog not to bark by emitting a shock, aversive spray or an ultrasonic sound the moment the dog barks.
CatStop: This motion - activated, ultrasonic alarm emits a high - pitched sound that repels cats, but can't be heard by humans.
Bill Fontana, Sonic Shadows, 2010; sound sculpture (twelve - channel live sound installation with ten accelerometers, eight loudspeakers, and four ultrasonic emitters on pan-tilt heads); dimensions variable; commissioned by SFMOMA; collection SFMOMA, purchase through a gift of Nancy and Steven Oliver, Wendy Webster and Stuart Davidson, and the Accessions Committee Fund; installation view, SFMOMA, 2017; © Bill Fontana; photo: Katherine Du Tiel
I believe there is a simple solution to bird and bat fatalities also, by mounting cheap passive ultrasonic «whistles» on turbine blades, to create a sound warning shield, keeping flying wildlife away from any spinning turbines.
The Under Display Fingerprint Scanning Solution from Vivo works by using piezoelectric effects which will generate and receive ultrasonic sound waves when a finger is pressed against the display.