For those who watch gravitational waves roll in from the universe, GW250114 is a big one. It's the clearest gravitational ...

Einstein's theory of gravity, general relativity, has passed all tests with predictions that are spot-on. One prediction that remains is "gravitational wave memory"—the prediction that a passing ...

Scientists have added another song to the soundtrack of the universe. On Wednesday (June 15), researchers with the Laser Interferometer Gravitational-Wave Observatory (LIGO) announced that they had ...

The Laser Interferometer Gravitational-wave Observatory (LIGO) and Virgo collaborations first detected gravitational waves in 2015. Ever since, they have continued to unveil new and exciting results ...

Earlier this year, researchers working on the Advanced Laser Interferometer Gravitational-wave Observatory (aLIGO) made the first ever detection of gravitational waves. The waves are believed to have ...

Optical millimetre-wave generation and signal processing have emerged as pivotal technologies in modern high-speed communications, advanced radar applications and imaging systems. These techniques ...

A signal generator, a general-purpose piece of test equipment, performs numerous measurements for a variety of applications requiring electromagnetic wave signals as stimuli. Its roots trace back to ...

There are several ways to evaluate the bandwidth of a signal in the time domain and frequency domain. Previously we looked at the classic relationship of rise time (t r) and bandwidth (f 3db) [Ref 1], ...

Simple triangle-wave generators have a weakness in that the waveform of their output signal normally cannot be modified. The circuit presented here makes it possible to smoothly alter the waveform of ...