Consumer & Gadgets
(Tech Xplore)—There are things that are unique about you—and researchers are eager to turn those things into identification tools. They are even listening to the unique sound of the person's skull. To be sure, researchers ...
Engineering
As any percussionist or fidgety pen-tapper can tell you, different materials make different noises when you hit them. Researchers at Drexel University hope this foundational acoustic phenomenon could be the key to the speedy ...
Mar 7, 2024
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Engineering
The human ability to notice the world around us is made possible by our sense organs—eyes, ears, nose, skin and tongue—which are so efficient that most people don't consciously think about them. Others, like Distinguished ...
Dec 1, 2023
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Engineering
Over the weekend, the Australian government revealed that last Tuesday its navy divers had sustained "minor injuries," likely due to sonar pulses from a Chinese navy vessel.
Nov 20, 2023
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Electronics & Semiconductors
Acoustic resonators are everywhere. In fact, there is a good chance you're holding one in your hand right now. Most smart phones today use bulk acoustic resonators as radio frequency filters to filter out noise that could ...
Oct 25, 2023
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Engineering
To predict how materials behave, one must first know their characteristics. Further, suppose you want to manipulate or design new materials and have them serve some technological purpose in, for example, electronic or photonic ...
Oct 2, 2023
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Security
Have you ever seen a dark shape out of the corner of your eye and thought it was a person, only to breathe a sigh of relief when you realize it's a coat rack or another innocuous item in your house? It's a harmless trick ...
Sep 25, 2023
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Computer Sciences
It is often a nuisance for residents living near railroad lines—and such a multi-faceted challenge for experts that there should be more than one word for "railroad noise." Sounds from steel wheels on rough or smoother ...
Sep 21, 2023
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Energy & Green Tech
Hydrogen is a beacon of hope for the successful transition of the energy and mobility sectors. However, the gas is also highly explosive, and strict safety precautions are needed if hydrogen is to be used safely. The latest ...
Sep 1, 2023
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Engineering
Researchers at The University of Texas at El Paso have constructed a fully autonomous boat that can carry out bathymetric surveys—surveys of the depth and terrain of bodies of water like oceans, rivers and lakes. The team ...
Jun 27, 2023
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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.
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