A highly coveted children's toy from the 1950s is going on sale—and it contains real uranium. The Gilbert U-238 Atomic Energy Laboratory, which was released in 1950, was dubbed one of 'the 10 ...

We find that decay of uranium-238 and thorium-232 together contribute TW to Earth’s heat flux. The neutrinos emitted from the decay of potassium-40 are below the limits of detection in our experiments ...

American physicists at U.C. Berkeley were soon to discover they could force uranium-238 to decay into plutonium-239; the substance has since been used in weapons and power plants around the world.

Knowing the energies of the neutrinos, the researchers calculated that the radioactive decay of uranium-238 and thorium-232 contributes about 20 trillion watts to the amount of heat the planet ...

Isotope Relative Abundance by Weight Half Life (Years) Specific Activity (Bq mg-1) U-238 99.28% 4510000000 12.4 U-235 0.72% 710000000 80 U-234 0.0057% 247000 231000 The activity concentration arising ...

U-238, the most abundant ... for half of a given quantity of uranium-238 to decay into other elements. U-235 has a half life of about 700 million years and represents about 0.72% of natural ...

The Gilbert U-238 Atomic Energy Laboratory was released in the early 1950s and comes complete with real uranium ore ... – A spinthariscope to view radioactive decay on a glowing fluorescent screen.

During the millions of years that humanity took to evolve to this point, however, the fissile U-235 has largely undergone decay already, while the fertile U-238 isotope, which can become fissile ...

Uranium has no stable isotopes, but U-235 and U-238 take so long to decay that a significant portion of those atoms present when the Earth formed survive today, along with tiny amounts of U-233, U ...

Uranium-238 (U-238) is the most abundant isotope of uranium, making up about 99.3% of natural uranium. A different isotope, ...