Here’s a quick way to determine the bandwidth of a signal when all you know is the clock frequency. Remember: before you start using rules of thumb, be sure to read the Rule of Thumb #0: Use rules of ...

An international team led by researchers from the Max Planck Institute for Gravitational Physics (Albert Einstein Institute, AEI) in Hannover has found strong observational evidence for multiple ...

Modern oscilloscopes capture, view, measure, and analyze complex RF signals in the time, frequency, and modulation domains. Time-domain analysis, the original oscilloscope function, allows users to ...

A 10-MHz sinusoidal carrier wave of amplitude 10 mV is modulated by a 5-kHz sinusoidal audio signal wave of amplitude 6 mV. Find (a) the frequency components of the resultant modulated wave and (b) ...

The very fabric of the universe is ringing with gravitational waves from its earliest epoch, and researchers have finally "heard" this cosmic symphony. On Thursday, June 28, the North American ...

Over the course of 13 years, a consortium of astronomers have been observing the signals from rotating stars in the hopes of catching faint ripples in space-time, known as gravitational waves. Finally ...

Einstein’s theory of general relativity states that space and time are interwoven into a single continuum. The gravitational pull of massive celestial bodies like stars or black holes corresponds to ...

A Chinese team has found key evidence of low-frequency gravitational waves, which are ripples of space-time that could provide clues to some of our universe’s darkest secrets. Using the ...