Engineering
Long-term exposure to low-frequency noise can cause numerous health problems, but the solution may be found in an unexpected object, a ping-pong ball. Conventionally thought of as the hollow plastic balls that speed through ...
Oct 10, 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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Robotics
A team of robotic and acoustic engineers from the Institute of Robotics and Intelligent Systems, ETH Zurich, and Institut für Theoretische Physik, Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster, ...
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
Sound waves could play a part in making III-V solar cells more affordable for Earth-bound applications, according research led by scientists at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL). ...
Jul 20, 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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Other
Search teams racing to find the missing Titanic submersible have detected underwater noises in the area. But it won't be easy to find the source of that sound in the ocean.
Jun 22, 2023
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Engineering
Researchers at NIST have developed a new—and sound—way to accurately measure the rate at which gas flows in and out of a vessel. The technique, which uses acoustic waves to determine the average temperature of the gas ...
Mar 31, 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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