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

Under these conditions we observe the emission of strong XUV harmonics. Their spectral content is characterized by a spectrometer after blocking the diverging optical beam with thin aluminum filters ...

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 ...

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 ...

No harmonic mitigation solution is ideal for every application. So, once you or your client decides to reduce harmonic distortion on a facility electrical power system, you must consider several ...

Natural harmonics produce a chiming sound that lots of players use in their music. They are produced by placing your fingers lightly directly over the frets and can add contrast to a rhythm part, ...

AC motors are abundant in the HVAC industry. Every fan and pump application requires an AC motor. For efficient and reliable control, adjustable-speed drives are becoming a common companion for these ...

If the electronic device you are developing plugs into the wall for power, chances are that you will need to send it to a compliance lab to ensure it meets a variety of international standards such as ...

We’ll explore the papers that claim to have detected black hole harmonics. Black holes are crazy enough on their own – but crash two together and you end up with a roiling blob of inescapable space ...