Pulsars suggest that ultra–low-frequency gravitational waves are rippling through the cosmos. The signal seen by ...

Frequency comb: Georg Woltersdorf (left) and his colleague Chris Körner in the lab where they created a spin frequency comb. (Courtesy: Uni Halle/Markus Scholz) A simple method for multiplying the ...

A network of optical cavities could be used to detect gravitational waves (GWs) in an unexplored range of frequencies, ...

Scientists have achieved a new world record in high-frequency submillimeter waves. This discovery paves the way for a new generation of sensing and imaging devices. Researchers at the UCLA Henry ...

Plasma waves can experience sudden changes in frequency with drastic effects, which are important to correctly model.

Researchers have demonstrated a technique for detecting and controlling ultrahigh frequency sound waves at the nanometer scale. This represents an advance towards next generation ultrasonic imaging ...

Researchers from the Max Planck Institute for Gravitational Physics (Albert Einstein Institute/AEI) in Potsdam found that hidden dimensions – as predicted by string theory – could influence ...

Here is a simple frequency doubler circuit that produces a square wave output with a precise 50 percent duty cycle. There are similar circuits in the literature [References 1, 2, 3] which require ...

As California awakens to the worsening risk of extreme climate events, researchers are shedding new light on last year’s anomalous and extreme Pacific Northwest heat wave. One study published this ...