The NRL placed contracts with universities to study four different methods of isotope separation : gaseous diffusion, ultra centrifuge, mass spectrograph, and thermal diffusion.
32.
The most obvious technology, the centrifuge, failed, but electromagnetic separation, gaseous diffusion, and thermal diffusion technologies were all successful and contributed to the project.
33.
In addition, molecular thermal diffusion and friction between the molecules of the glass walls and the molecules of the eluent contribute to the broadening of the bands.
34.
The subsequent displacement into the lower mantle is caused by slab pull forces, or the destabilization of the slab from warming and broadening due to thermal diffusion.
35.
Soon after, research on thermal diffusion in gases followed, as did ultracentrifuge concepts, cathode dispersion, excitation of gases by using energetic ions and research on molecular beams.
36.
Y-12 separated the uranium-235 for Little Boy, the nuclear weapon that was S-50 Thermal Diffusion Plant at the K-25 site also provided feed material for Y-12's Beta Calutrons.
37.
He recruited Abelson, who became a Navy employee in June 1941, and the Navy pressed ahead with thermal diffusion, constructing a pilot plant at Anacostia in June 1941.
38.
FRS studies of molecular mass diffusion are somewhat more involved than studies of thermal diffusion or thermophoresis because the ground and excited dye states may have different diffusion coefficients.
39.
For example, tree rings, ice cores, and corals generally show variation on an annual time scale, but borehole reconstructions rely on rates of thermal diffusion, and small scale fluctuations are washed out.
40.
The pioneering experiments of Hammiche " et al " and Anderson had limited spatial resolution due to thermal diffusion-the spreading of heat away from the region where the infrared light was absorbed.
