Caltech scientists have found a fast and efficient way to add up large numbers of Feynman diagrams, the simple drawings ...

Not much can surprise someone who partook in four shuttle missions and three space walks during a 36-year career with NASA.

Introduction to continuum mechanics for engineers by Bowen, Ray M., 1936- Publication date 1989 Topics Continuum mechanics, Milieux continus, Mécanique des, Kontinuumsmechanik Publisher New York : ...

Differential mechanisms possess various forms and are applied in a wide spectrum of mechanical systems. This paper proposes to categorize differential mechanisms into kinematic differential mechanisms ...