Here’s how it works. Field experiments revealed that using rope and a small group of people, the people of Rapa Nui could have "walked" the moai statues. (Image credit: Carl Lipo) Easter Island's ...

Abstract: In the short-circuit current calculation of power grid, the renewable energy sources (RES) cannot use the equivalent method similar to the traditional synchronous generator because of the ...

Abstract: Isolators on antennas, the typical non-reciprocal devices, are used to protect high-power wireless transmitters from signal reflections. Currently, the widely used isolators are based on ...