Van de Graaff, Robert Jemison

(văn də gräf), 1901–67, American physicist, b. Tuscaloosa, Ala., grad. Univ. of Alabama (B.S., 1922), Ph.D. Oxford, 1928. He was research associate at Massachusetts Institute of Technology (1931–34) and associate professor from 1934. He developed an electrostatic particle acceleratorparticle accelerator,
apparatus used in nuclear physics to produce beams of energetic charged particles and to direct them against various targets. Such machines, popularly called atom smashers, are needed to observe objects as small as the atomic nucleus in studies of its
..... Click the link for more information. —now called a Van de Graaff generator—used in nuclear research. Introduced in 1931, it uses the charge that accumulates from a rapidly moving belt inside an insulated hollow metal globe to produce high-voltage electrical discharges that look like lightning.

单词	van de graaff, robert jemison
释义	Van de Graaff, Robert Jemison Van de Graaff, Robert Jemison (văn də gräf), 1901–67, American physicist, b. Tuscaloosa, Ala., grad. Univ. of Alabama (B.S., 1922), Ph.D. Oxford, 1928. He was research associate at Massachusetts Institute of Technology (1931–34) and associate professor from 1934. He developed an electrostatic particle acceleratorparticle accelerator, apparatus used in nuclear physics to produce beams of energetic charged particles and to direct them against various targets. Such machines, popularly called atom smashers, are needed to observe objects as small as the atomic nucleus in studies of its ..... Click the link for more information. —now called a Van de Graaff generator—used in nuclear research. Introduced in 1931, it uses the charge that accumulates from a rapidly moving belt inside an insulated hollow metal globe to produce high-voltage electrical discharges that look like lightning.
随便看	fracture mechanics analysis fracture mechanics of ductile metals crested penguin crested screamer crested swift crested tit crested tits crested wheat grass crested wheatgrass crested wood ibis crested wood ibises crest factor crest-factor crest factor reduction crestfallen crestfallenly crestfallenness crestfallen (song) crest gate crest hair crestien de troyes cresting crestings crest length crestless