A. Plutonium. 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.
Infinity Tattoo Meaning. Infinity tattoos are steadily on the rise with many people opting to get these in one form or another. The infinity symbol, often used in mathematics, represents a never-ending loop and is depicted as a number 8 on its side. In the tattoo world this can be seen as a symbol of never-ending or limitless possibility. Some cultures also believe it to represent rebirth or reincarnation.
Origins of Infinity. The infinity symbol is not a new symbol - throughout the ages and various cultures the infinity symbol was used to represent different concepts and ideas. There is a meaning that has ritualized from India and Tibet, where the symbol represented perfection and equilibrium between the male and female gender. The infinity sign also appears in a number of mystical Celtic knot designs - which just like the infinity symbol have no end or beginning.