"Opposites charges attract; like charges repel" is a long-held fundamental principle of physics that you might have heard at school, but your teacher may have been wrong. Researchers from the ...

There is one physics concept that almost everyone misunderstands, even after hearing it explained a hundred times. The common version sounds logical, but it creates the wrong picture in the brain.

This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...

The goal of drive-system engineers is usually pretty straightforward. Specify the smallest motor and drive needed to accelerate and run a load at a required rate, and determine the braking forces ...