Engineering
A new device that can reduce the intensity of sound passing through open windows is presented in a proof-of-principle study in Scientific Reports. It fits into a two-panel sliding window and can decrease the perceived loudness ...
Jul 9, 2020
0
7
Engineering
Engineers at Duke University have demonstrated a versatile microfluidic lab-on-a-chip that uses sound waves to create tunnels in oil to touchlessly manipulate and transport droplets. The technology could form the basis of ...
Jun 11, 2020
0
297
Engineering
Try whispering at one end of the Echo Wall in the Temple of Heaven in Beijing. People at the far end of the curved wall will hear you from 65 meters away. This is the whispering-gallery effect. Now, researchers from Japan ...
May 26, 2020
0
6
Electronics & Semiconductors
Waves, whether they are light waves, sound waves, or any other kind, travel in the same manner in forward and reverse directions—this is known as the principle of reciprocity. If we could route waves in one direction only—breaking ...
May 21, 2020
0
140
Engineering
Imperial College London researchers have invented a new health tracking sensor for pets and people that monitors vital signs through fur or clothing.
Feb 25, 2020
0
93
Robotics
ETH Pioneer Fellow Marcel Schuck is developing a robotic gripper that can manipulate small and fragile objects without touching them. The technology is based on sound waves.
Jan 24, 2020
3
387
Engineering
Music is an art, but it is also a science involving vibrating reeds and strings, sound waves and resonances. The study of acoustics can help scientists produce beautiful music even with musical instruments fashioned with ...
Dec 5, 2019
0
6
Engineering
Say what? Laser plasma balls that can talk? The Pentagon? How, and for what? The answer is that instead of beaming a flashing light or shouting over a loudspeaker to keep people away from sensitive areas, new technology is ...
Security
You type, hacker deciphers, your password is doomed. That is the grim scenario being discussed in a paper that is now on arXiv. "Hearing your touch: A new acoustic side channel on smartphones," is by authors Ilia Shumailov, ...
Engineering
A miniaturised version of a musical instrument that could be used to improve the quality of medical images has been manufactured by researchers at the University of Strathclyde.
Nov 8, 2018
1
222
Longitudinal waves are waves that have same direction of oscillations or vibrations along or parallel to their direction of travel, which means that the oscillations of the medium (particle) is in the same direction or opposite direction as the motion of the wave. Mechanical longitudinal waves have been also referred to as compressional waves or compression waves.
This text uses material from Wikipedia, licensed under CC BY-SA
