Gadgetry and clever engineering quietly transform how military forces operate. These gadgets deliver subtlety, enable surveillance and control, and give a handful of people an outsized advantage. They ...

Recently, the people of the city of Kolkata witnessed the earthquake for a short time; individuals ran out of high-rise offices to the streets in panic.

High-fidelity simulations demonstrate how the number of blades affects the wakes of rim-driven thrusters.