A research team has discovered how to finely control Dirac plasmon polaritons in topological insulator metamaterials, overcoming long-standing challenges in the terahertz range. In today’s world of ...

Cornell researchers have built a programmable optical chip that can change the color of light by merging photons, without ...

California lawmakers approved Democratic-led redistricting maps for voters to decide in a special election, a day after Texas House Republicans passed new redistricting plans. The California ...

Warning: This graphic requires JavaScript. Please enable JavaScript for the best experience. The Republican co-authors of the latest effort to repeal and replace the ...

Abstract: In single-phase ac/dc light-emitting diode (LED) drivers, a reduced power processing technique is currently being used to increase conversion efficiency while reducing the size and cost of ...

Former Prime Minister Tony Blair has left the Anglican Church to become a Roman Catholic. His wife and children are already Catholic and there had been speculation he would convert after leaving ...

Abstract: Modular Multilevel Resonant DC-DC Converters (MMRDCs) are increasingly recognized as competitive solutions for medium-voltage to low-voltage (MV-LV) conversion with wide input ranges.

Despite its name, the old Empire of Ghana is not geographically, ethnically, or in any other way, related to modern Ghana. It lies about four hundred miles north west of modern Ghana. Ancient Ghana ...

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