n. 1.United States electrical engineer who designed an early analogue computer and who led the scientific program of the United States during World War II (1890-1974)
Element
Element : neon Symbol : ne Atomic no. : 10 Melting Point (deg c) : -248.59 Boiling Point (deg c) : -246.08 Discoverer : ramsay and travers (1898) .. More >>