In 1983, Stanislav Petrov helped to prevent the accidental outbreak of nuclear war by recognizing that a false alarm in Soviet early warning systems was not a real report of an imminent US attack. In ...

Factors influencing the proportioning of machine elements: stresses, deformations, and failure criteria as applied to shafts, springs, belts, bearings, gears. Design of Elements is a required course ...

In December 2015, elements 113, 115, 117, and 118 were approved by the International Union of Pure and Applied Chemistry (IUPAC). Five months later, they have names, and are to be added to the table ...