A research group led by scientists from Egypt’s Cairo University has developed a novel control strategy for frequency fluctuations during the deloading of PV systems. “This paper evaluates the ...

Sound plays an important role for many animals, helping them navigate and hunt. Echolocation is the ability of animals like ...

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 ...

Doubling up: Georgia Tech researchers Kyu-Tae Lee (left) and Mohammad Taghinejad demonstrate frequency doubling on a slab of titanium dioxide using a red laser to create nonlinear effects with tiny ...