Bottles have one commonly known form of acoustic resonance, but double-walled bottles have a second, and exploring their interactions can teach students about vibrations and oscillations.

Frequency Festival runs Feb. 24 to March 1. All shows at Constellation Chicago, 3111 N. Western Ave., with $20 admission, ...

Sleep frequencies are the latest sound-based sleep trend promising deeper, more restorative rest. Here's how they work ...

An AC resonant test system is designed to generate high alternating voltage by forming a resonant circuit between the reactor and the test object. By operating at or near resonance, the system can ...

If a vacuum line much smaller than the flange diameter of the turbopump (DN 100 (100 mm)) is used, the effective pumping speed will decrease. A DN 25 (25 mm) vacuum line will result in only around 7.4 ...

With the terahertz scope, the team observed a frictionless “superfluid” of superconducting electrons that were collectively ...

This valuable study uses EEG and computational modeling to investigate hemispheric oscillatory asymmetries in unilateral spatial neglect. The work benefits from rare patient data and a careful ...

Sound and energy are really cool things, but Ray Petelin shows how that energy can be transferred from one place to another in a new Hey Ray! Hegseth orders rare, urgent meeting of hundreds of ...