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It is now known that uranium, radioactive in all its isotopes, consists naturally of a
mixture of uranium-238 (99.27 percent, alpha emitter of 4,510,000,000-year half-
life), uranium-235 (0.72 percent, alpha emitter of 713,000,000year half-life), and ...
... as a deposit from the acid or as a residue from the distillation of the acid. Crude
pyroligneous acid is the condensed, volatile product of wood distillation, and it
has an average composition of water, 81 percent; methyl alcohol, 3–4 percent; ...
As a direct result of this confrontation, 90 percent of the industry and 70 percent of
the residential area were heavily damaged or entirely destroyed. Reconstruction
of the city began immediately, and by 1950 over 50,000 new houses had been ...
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review