For your consideration...the following is an excerpt from a radio spot on KAPL radio AM 1300, Jacksonville, Oregon, from Applegate Christian Fellowship, called " Akin For the Truth". Calvary Chapel, Grants Pass also broadcasts this spot from KCGP 106.7 FM. To listen to the entire spot (a few minutes long), click the little microphone icon....Jack You may want to check out a relatively new website: www.akinforthetruth.net. This site provides text accompanying the voice recordings in most cases. We are also in the process of placing references and footnotes at that address to assist those researchers who like to look a bit more closely....Jack According to all we know today about physical matter, it is made up of atoms, and, even though you can't see them, these atoms make up everything you see, touch, smell, etc. Getting a basic understanding of radioactivity can begin with that of a useful model of the atom, the Bohr Model, named after Niels Bohr who proposed the structure in 1913, that most of us recall from high school or college. Looking much like a tiny solar system, this model consists of a central nucleus, composed of neutrons and protons, surrounded by electrons that "orbit��? around the nucleus. Protons carry a positive charge, neutrons (which are actually built from protons and electrons) are electrically "neutral��?, and the electron is negative.