Explore the moment of inertia tensor of a solid cube using two different methods. This short compares approaches, highlights symmetry, and shows how each method leads to the same tensor—building ...

For at least a decade, the quadruple axel jump was figure skating’s white whale. “It’s been this unreachable thing, like the four-minute mile” once was, says Matthew Lind, a technical specialist for U ...

The smaller of two equally weighted objects is judged to be heavier when lifted. Here we disproved a leading hypothesis that this size–weight illusion is caused by a mismatch between predicted and ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...