Consumer & Gadgets

Can you charge an old phone with a new charger?

"Do older Apple devices have the software that allows them to regulate the amount of power provided by today's more powerful chargers? Can those higher-powered chargers harm older devices?"

Engineering

Detonation-based device for novel propulsion applications

Combustors that drive propulsion systems are often volumetric in nature, typically in the form of cylinders, and convert chemical to thermal and mechanical energy through oxidation of fuels. This deflagrating combustion approach ...

Energy & Green Tech

Why public policy must adjust to new energy source preference

Support for renewable energy sources such as solar and wind is linked to a belief that climate change will be catastrophic, while supporters of nuclear power tend to be less concerned about climate risks, says a study from ...

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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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