Radioactive materials offer an alternative power source. Such materials, which can be found in nature or produced in a reactor, generate continuous heat through radioactive decay. The rate of decay ...

Radioactive decay is a spontaneous and random process. A block of radioactive material will contain many trillions of nuclei and not all nuclei are likely to decay at the same time so it is ...

The United States is set to conduct a subcritical nuclear test in the spring, aiming to evaluate the condition of plutonium used in its nuclear wea ...

and sugar cubes to simulate the radioactive decay of different isotopes. A radioactive isotope's nucleus is unstable and spontaneously decays, giving off radiation and changing into a different ...