Final Thoughts on Hemp Seeds. 1  Hemp seeds, or hemp hearts, have a high nutrition profile and are a healthy addition to most diets. 2  Hemp seeds are the seeds of the same plant as marijuana, the cannabis plant, but they do not contain high levels of THC and will not get you high.
The world's first nuclear explosion was achieved with plutonium, a man-made element produced in nuclear reactors. Plutonium is created when an atom of uranium-238 absorbs a neutron and becomes plutonium-239. The reactor generates the neutrons in a controlled chain reaction.
Hiroshima. On August 6, 1945, a uranium fission bomb was detonated over the Japanese city of Hiroshima. The bomb, called Little Boy was a  gun-type  device which used an explosive charge to force two sub-critical masses of U-235 together.lutonium Bomb. Plutonium-239 is a fissionable isotope and can be used to make a nuclear fission bomb similar to that produced with uranium-235. The bomb which was dropped at Nagasaki was a plutonium bomb. Not enough Pu-239 exists in nature to make a major weapons supply, but it is easily produced in breeder reactors.