Isotope persisted down to the present because their rate of decay is so slow (e.g. uranium-238 and potassium-40). Post-primordial isotopes were created by cosmic ray bombardment as cosmogenic nuclides (e.g., tritium, carbon-14), or by the decay of a radioactive primordial isotope to a radioactive radiogenic nuclide daughter (e.g. uranium to radium). A few isotopes are naturally synthesized as nucleogenic nuclides, by some other natural nuclear reaction, such as when neutrons from natural nuclear fission are absorbed by another atom. As discussed above, only 80 elements have any stable isotopes, and 26 of these have only one stable isotope. Thus, about two-thirds
Isotope 244 expected release date in the fourth quarter of 2012. Isotope 244 Isotope 244 is a video game developer, based in the USA. It was founded by James Bryant in 1999. Isotope 244 is best known for developing retro remakes and real-time strategy genres for both desktop and mobile devices. Isotope 244 was also a leading developer of 3D screensavers in the early 2000s. The company received several mentions for its retrogaming and real-time strategy games, above all on portable platforms. IP Atomic Cannon Pocket was a notable turn-based strategy game available on the Pocket PC. It was the top selling