osilliscope
SONAR (SOund Navigation And Ranging)
An ultrasonic wave is a sound wave vibrating at a frequency beyond the human hearing. The wave is emited from a devise (or an organ in the case of animals such as bats). The wave then hits an object and reflects of it (an echo). The devise (or another organ in the bat) will detect the reflect wave and measure its direction and the time it took to be reflected and the devise would use that information to produce an image. It works pretty much like our ability to see. Light hits objects and is reflected off them and hits our eyes. An ultrasonic devise "sees with sound" waves instead of light waves. During pregnancy, a devise omits an ultrasonic wave (you can't hear it!) The wave will hit many things in the stomach but the devise is programmed so that it only measures a specific distance (or time) which is to the fetus. The sound waves hit the fetus and bounce back. hope this helps
The group had to devise a plan, and fast!
output
a devise is a gift of money
Devise is the verb, while device is the noun. We will devise a device for that purpose.
which devise closes or breaks the circuit
output devise
The past tense of devise is devised.
You must eliminate the source of where the sound is coming from. You may also attempt to sound proof your house as they do in music recordin studios but the easiest way is to eliminate the source. Low frequency sounds may cause an ear drum to rupture but it would take a lot of effort to get that to happen. In short, there is no device that could eliminate this problem.
TO contrive, plan, or elaborate; invent from existing principles or ideas: to devise a method.