Shortwave radio signals (3-30MHz) are highly susceptible to interference from power adapters, fluorescent or LED light ...

Sound waves radiated by underwater vehicles in shallow seas are reflected by the sea surface and seabed. Wave propagation in complex environments is often associated with multi-physics fields.

Deep water promotes sound wave propagation (spreading out) enabling acoustical sensors — like SURTASS sensors—to detect enemy submarines; however, according to Navy officials, shallow water ...

Noise adversely affects the economy by reducing productivity, increasing healthcare costs, affecting property values, and ...

New audio tech uses ultrasound to create isolated pockets of sound, enabling private listening without headphones.

Directing sound to a specific location is difficult because of how sound waves behave. As vibrations move through the air, ...

Controlling where sound goes is difficult because of a phenomenon called diffraction – the tendency of sound waves to spread out as they travel. This effect is particularly strong for low-frequency ...

Jia-Xin "Jay" Zhong, a postdoctoral scholar of acoustics at Penn State, used a dummy with microphones in its ears to measure the presence or absence of sound along an ultrasonic trajectory.

Get Instant Summarized Text (Gist) A method for exciting phonon-polaritons using electrical current has been developed, enabling the generation of long-wave infrared and terahertz waves. This ...

Ryan Smith; Chief Technology Officer, Co - Founder; Origin Materials Operating Inc John Bissell; Co-Chief Executive Officer, Co-Founder, Director; Origin Materials Inc Thank you for standing by. This ...