Radioactivity is a nuclear phenomenon. It is spontaneous. Heat, light, pressure, electric field, magnetic fjield even chemical reaction cando little to affect it. Because of radioactivity,...
"Nuclear Fission and Nuclear Fusion" is the concept of modern physics. Fission corresponds to the destruction of a heavier nucleus whereas fusion is the coagulation of couple of lighter...
This essay gives an enlightening discussion on the different breakthroughs and challenges that the field of physics face or will confront for the next few years.