AER 627 Lecture Notes - Lecture 7: Radiography, Photon
11 Jul 2016
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Why is it wrong to state that a charged particle acceleerating. An element is determined by the number of protons. Democritus who coined the term atom? http://physics. bu. edu/~duffy/semester2/c37_energylevels. html. Neutron : no charge, mass 1amu, found in nucleus discovered by james chadwick http://quizlet. com/subject/atomic-theory/ http://abyss. uoregon. edu/~js/glossary/bohr_atom. html. If the electron in the atom makes a transition from a particular state to a lower state, it is losing energy. To conserve energy, a photon with an energy equal to the energy difference between the states will be emitted by the atom. Each orbit around the nucleus represents an energy level, and electrons cannot exist in between orbits. Orbits closer to the nucleus have lower energy. If energy is added, an electron can be excited to jump to a higher energy level and orbit farther from the nucleus. Eventually, though, the electron will return to its original state, and the atom will give off energy equal to the difference between the two orbits.
