Neutron activation analysis

asteroids onto neutron stars. If there is an asteroid belt around a neutron star, then a chance infall of an asteroid from the belt to the neutron star would give rise to a non-repeating FRB. On the other hand, if a neutron star passes through an asteroid belt around another star, then there might be more than one asteroid infalls resulting in a series of FRBs. In particular, if the star surrounded by the asteroid belt is gravitationally bound to the neutron star, then the neutron star would…

Natural selection is a concept that has long since interested me, I consider it to mean “survival of the fittest”. Thus, looking upon this title, I deduced that the metaphor, which is used for comparison, implies the following principles of natural selection apply to knowledge development: there is variation in knowledge, the ‘fittest’ knowledge is most suitably adapted to the environment, and superseded knowledge is not fit to survive. Questions and doubts thereby arise: What is meant by the…

was an important step in creating the nuclear model for all atoms. Most importantly, Rutherford’s Nuclear Atomic Model helped Bohr create his Planetary Model, which is close to the model that we use to describe atoms today, and the discovery of the neutron. From his important discoveries, Rutherford was dubbed the name “The Father of Nuclear Physics” and I would like to know why he was first interested in atoms and atomic structure in the first place, and what led him to using the gold foil…

If the explosive goes off along the way, the TCV will "catch all of the primary fragmentation, and [the explosive will] not harm anyone in the immediate area," Haber told Live Science. For instance, after police found the unexploded charge in New York on Saturday, they used a robot to examine and then load the bomb into a TCV, according to The New York Times. Then, they drove the TCV, which was attached to a police vehicle, to a police facility in the Bronx, the Times reported. Most TCVs have…

Neutrinos are one of the most abundant particles in the universe second only to photons, yet they are one of the most elusive particles known to man. The neutrino is essentially a near massless subatomic particle possessing a neutral charge. Neutrinos scarcely interact with normal matter as a consequence of having a neutral charge and a mass of almost zero. There are three flavors of neutrinos: electron, tau, and muon; many neutrinos oscillate between these flavors. Neutrinos can be produced in…

Collectively the pennies represent a radioactive sample, and each penny is an atom. Because each penny has a 50% chance of decaying it can represent a radioactive atom. When the atoms are grouped together it becomes a sample of a radioactive element. For the simulation to work one has to assume that a coin toss has a 50% chance of landing on heads and a 50% chance of landing on tails. If this is not true then the trial will not be a true half-life because more or less than half of the atoms…

occurring random exponential decay is the process of radioactive decay. Some isotopes of nature are considered radioactive due to a specific characteristic of their nucleus. Radioactive isotopes, or radioisotopes, do not contain the proper amount of neutrons. As a result of this, the nucleus of radioisotopes is unstable. The instability causes them to emit particles or electromagnetic waves from…

Fission is a reaction when the nucleus of an atom, gets a neutron, and then splits into two or more nuclei. This causes a release in significant amounts of energy as well as more neutrons. These neutrons then go on to split more nuclei and a chain reaction takes place. Fusion is basically the reverse process of fission. In this situation the nuclei collide instead and join together to form an atom larger than helium. Nuclear power plant use fission to produce very large amounts of energy. Enough…

Nuclear Energy is energy created from nuclear reactions. There are two known forms of nuclear reactions; fission and fusion. Fusion is the combining of two atoms to form a new one. Fusion occurs when two molecules are moving at extremely high speeds at each other. Then, the two atoms collide and combine together to form a new atom and a massive amount of energy. Unfortunately, here on earth, scientists have not been able to replicate fusion for use. The only known place where fusion occurs is…

Enzymes are organic catalysts that speed up reactions that occur by lowering the activation energy of the reactants. By lowering the activation energy, the chemical bonds are weakened, thus the reactions are much faster than without the catalyst. Enzymes are composed of proteins which shape dictates the function of the enzyme. On the enzyme it contains a part called the active site where the substrate binds and the chemical reaction undergoes. A substrate is the chemical involved in the…