How giant galaxies could form just 1.4 billion years after the Big Bang

The existence of massive, elliptical galaxies in the early universe has puzzled astronomers for two decades. An international ...

Why only a small number of planets are suitable for life

For life to develop on a planet, certain chemical elements are needed in sufficient quantities. Phosphorus and nitrogen are essential. Phosphorus is vital for the formation of DNA and RNA, which store ...
IEEE

Homogenization of Form-Wound Windings in Frequency and Time Domain Finite-Element Modeling of Electrical Machines

Abstract: In this paper, the authors deal with the finite-element (FE) modeling of eddy-current effects in form-wound windings of electrical machines using a previously proposed general frequency- and ...
The New York Times

The Dirty Truth About Your Clean-Energy Car

In a new book, Nicolas Niarchos traces the mineral supply chain for lithium-ion batteries, exposing their considerable human and environmental costs. By Peter S. Goodman Peter S. Goodman is the global ...