is the principle of constructing structures of rods and cables, with the rods running in compression and the cables operating in tension.

After compression of polymers, the density of an ordinary golf ball is equal to 40 kilograms of steel compressed to four centimeters in diameter.

A type of liquid rocket engine with a wedge-shaped nozzle that maintains aerodynamic efficiency over a wide range of altitudes above the Earth's surface with varying atmospheric pressures.

It's the field generated by a magnet or a conductor through which an electric current runs.