A new material been developed in ultrasound imaging technique which enables sound waves to leave with double its original frequency from USG Device and will help the image to be more clear and sharp, a study says. Most roads allow cars to flow in both directions. However, in some circumstances, such as congested city streets, it makes sense to limit traffic to one direction only. With electricity it is also useful to "rectify"currents -- that is, make them move in one direction -- using things called diodes.
One-way electricity is handy since it enables transistors to be turned on and off, among other things. Making sound waves go in one direction only has been more difficult because of the way sound waves move through a material. Sound consists of push-pull disturbances that first compress atoms or molecules, whether they are in a solid or even a gas like air, and then let them…
