If you purchase an independently reviewed product or service through a link on our website, we may receive an affiliate commission. Learn more about our policies and reviews. A high-frequency facial ...

I recommend using the Apreuty High Frequency Machine ($30) close to your skin rather than on your skin for a more targeted, intense approach. If you leave a gap between the device and your skin, the ...

Low-frequency resonance is a bigger problem than high-frequency resonance in general industrial machines. This little-recognized distinction is crucial in determining the best way to correct it.

A grouping of Mitsubishi Electric’s AC drives or variable frequency drives (VFDs). In the competitive landscape of machine design, engineers in food, pharmaceutical and manufacturing sectors face the ...

Salma Hayek’s beauty comes from within. The 56-year-old Oscar winner recently joined Kelly Ripa’s SiriusXM podcast, “Let’s Talk Off Camera,” for a wide-ranging interview that touched on her beauty ...

At a location in Europe, it is necessary to supply 300 kW of 60 Hz power. The only power sources available operate at 50 Hz. It is decided to generate the power by means of a motor-generator set ...