Harmonics of the 60 Hz power frequency has been around for a long time. It was observed on transmission systems in the early 1890s and was associated with voltage and current waveforms. As equipment ...

Just because harmonics is becoming a more prevalent problem, that doesn't mean the subject is getting any easier to understand Harmonics are AC voltages and currents with frequencies that are integer ...

Haemodynamic variations are inherent to blood vessel geometries (such as bifurcations) and correlate with regional development of inflammation and atherosclerosis. However, the complex frequency ...

In electrical heating applications, resistive heaters are powered through phase angle-controlled SCR/triac circuits to vary the applied voltage/power to maintain the required temperature. Phase angle ...

Musical instruments and throats create different notes by making the air around them vibrate at particular frequencies (check out part one to find out how they do it). When you pluck the A string on a ...

Tapped harmonics have been used by guitarists in many styles over the decades, from acoustic through to rock. Notable fans of this technique include Nuno Bettencourt, Michael Hedges, Jeff Beck, Tuck ...

Physics of Sound Harmonics and The Unified Theory Theoretical physicist Brian Greene, best known for his work on string theory, explains how music might have the answer we need to find a unified ...