Energy & Green Tech

High-frequency transistors achieve record efficiency at 100 volts

Researchers at the Fraunhofer Institute for Applied Solid State Physics IAF have succeeded in significantly increasing the output power of their GaN‑based high‑frequency transistors for the frequency range from 1–2 ...

Business

From 'Sam-suck' to Apple rival: the Samsung transformation

Military-style management and an unquestioning reverence for the founding Lee family have fuelled Samsung's transition from the world's most ridiculed phonemaker to its biggest, says the author of a new book.

Energy & Green Tech

Trapped ions may unlock a path to better batteries and much more

A serendipitous discovery during research into batteries at Oregon State University holds major implications for inventing new materials with a vast range of scientific and commercial applications, the study's corresponding ...

Energy & Green Tech

World fritters away half trillion dollars on coal support

Nations around the world risk wasting $640 billion by continuing to prop up the coal industry rather than investing in less expensive and environmentally friendlier wind and solar power initiatives.

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Power metal

Power metal is a style of heavy metal music combining characteristics of traditional metal with thrash metal or speed metal, often within symphonic context. The term refers to two different but related styles: the first pioneered and largely practiced in North America with a harder sound similar to speed metal, and a later more widespread and popular style based in Europe (especially Germany, Italy, Scandinavia) and Japan (early Visual Kei bands) with a lighter, more melodic sound and frequent use of keyboards.

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