Imagine you're a researcher studying how sleep affects mood. To explore the connection, you would look at two key "variables": sleep (how much someone gets) and mood (how happy or irritable they feel) ...

The LCLS is an X-ray FEL based on planar, permanent-magnet undulators. These undulators produce horizontally polarized X-rays between 270 eV and 12.8 keV. Each undulator segment has a magnetic length ...

Psychologist Roy Baumeister reflects on his groundbreaking 1998 research on self-control and shares how it became the dominant theory despite its unpopular Freudian roots. Back in 1996, Roy Baumeister ...

The way we control the speed of fan motors or pump motors has tremendously changed in the past two decades with the introduction of variable-frequency drives (VFDs), aka variable-frequency controllers ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Despite improvements in the management of atrial fibrillation, patients with this condition remain at increased risk for cardiovascular complications. It is unclear whether early rhythm-control ...