Lee, Yuan Tseh (1936-...), a Chinese-born American scientist, shared the Nobel Prize for chemistry in 1986 with fellow American Dudley Herschbach, and John Polanyi of Canada (see Herschbach, Dudley Robert; Polanyi, John Charles). Lee was awarded the prize for his development of the crossed molecular beam technique for studying chemical reactions. This technique involves creating high-speed jets of molecules or atoms, which collide so that some individual molecules or atoms react with each other. This method yields information about the behavior of molecules or atoms that ordinary chemical reactions cannot provide.