Sonic and ultrasonic weapons (USW) are weapons of various types that use sound to injure, incapacitate, or kill an opponent.

The ultrasonic motor is now used in many consumer and office electronics requiring precision rotations over long periods of time.

In 1992, 29.6 of pregnant women received ultrasonic examinations before the 21st week of pregnancy, whereas in 2001 their proportion had risen to 86.2 .

Its ability to act as a sound transducer to and from the electrical domain was to inspire the invention of the telephone.

Elements on the electrical side, such as the inductance of the magnetostrictive transducer, are omitted but would be taken into account in a complete design.

The element formula_2 is the open circuit mechanical impedance, that is, the impedance presented by the mechanical side of the transducer when no current is entering the electrical side.

And then the transducer then makes the output cells send the code on up to the brain, and the result is a retinal prosthetic that can produce normal retinal output.

You can see, in her case, she's wearing her transducer arrays, one of the front of her chest, one on the back, and then the second pair side to side over the liver.

The linear variable differential transformer (LVDT) (also called just a differential transformer, linear variable displacement transformer, or linear variable displacement transducer ) is a type of electrical transformer used for measuring linear displacement (position).

This could be applied to problems that were entirely in the mechanical domain, but for mechanical filters with an electrical application it is necessary to include the transducer in the analogy as well.

The whole notion, then, is one that at the interface there are physical properties in that transducer in this case it's pressure and touches that allow you to present things to the user that you could never present before.

Here are three sets of firing patterns. The top one is from a normal animal, the middle one is from a blind animal that's been treated with this encoder transducer device, and the bottom one is from a blind animal treated with a standard prosthetic.

So as you can see, the firing patterns from the blind animal treated with the encoder transducer really do very closely match the normal firing patterns and it's not perfect, but it's pretty good and the blind animal treated with the standard prosthetic, the responses really don't.

See also Acoustic tweezers Optical levitation Radiation pressure Electrostatic levitation Magnetic levitation Aerodynamic levitation Buoyancy References External links McGraw Hill AccessScience Acoustic radiation pressure A Multi Transducer Near Field Acoustic Levitation System for Noncontact Transportation of Large Sized Planar Objects Live Science Scientists Levitate Small Animals