Observer

In ‘11,000 Strings,’ Georg Friedrich Haas Builds a Vast Sonic Landscape

The piece is a work of enormous scope and forcefulness that reaches, by some pivot of a lens, an intimacy that surprises.
The Debrief

“What Is the Origin of the Waves?” Scientists Hunt the Source of Mysterious Ultra-Low Frequency Gravitational Signals

Ultra-low frequency nanohertz gravitational waves emanating from pulsars may be revealing the fabric of the universe.
IEEE

Bioinspired Covert Sonar Signal Waveform Design Using Phase Coding of Sperm Whale Clicks for Underwater Sensor Platforms

Abstract: Low probability of intercept (LPI) and low probability of detection (LPD) strategies face challenges in enhancing the effective detection range while maintaining covertness. In order to ...

Taking the shock out of predicting shock wave behavior with precise computational modeling

Shock waves should not be shocking—engineers across scientific fields need to be able to precisely predict how the instant and strong pressure changes initiate and dissipate to prevent damage. Now, ...

Quantum radio antenna uses Rydberg states for sensitive, all-optical signal detection

A team from the Faculty of Physics and the Center for Quantum Optical Technologies at the University of Warsaw has developed ...
IEEE

Multiple Signal Classification Method of EMF-Based Speed and Position Estimation for Surface PMSM Sensorless Drives

Abstract: A speed and position estimation method based on Multiple Signal Classification is proposed, which avoid the influence of harmonic components and sliding-mode chattering problem by ...