Existentialism is a philosophy that emphasizes individual existence, freedom and choice. It is the view that humans define their own meaning in life, and try to make rational decisions despite existing in an irrational universe. It focuses on the question of human existence, and the feeling that there is no purpose or explanation at the core of existence. It holds that, as there is no God or any other transcendent force, the only way to counter this nothingness (and hence to find meaning in life) is by embracing existence.
There are three primary radiation types associated with radioactivity. Radioactivity is the spontaneous emission of energy from the nucleus of certain elements, most notably uranium.There are three forms of energy associated with radioactivity; alpha, beta and gamma radiation.The classifications were originally made according to the penetrating power of the radiation, see figure 2.uclear Radiation. There are three primary radiation types associated with radioactivity. Radioactivity is the spontaneous emission of energy from the nucleus of certain elements, most notably uranium. There are three forms of energy associated with radioactivity; alpha, beta and gamma radiation.
The reason radioactive isotopes emit radiation is that the emission of radiation is a nutural consequence of being radioactive. Let's look a bit more closely. Radioactive isotâ¦opes are unstable atoms, and they will undergo radioactive decay sooner or later. The unstable atomic nuclei undergo a change based on what particular isotope is being considered. In any case, when a nuclear change occurs, radiation of some kind is emitted from that nucleus. It really is that simple.