Editing Motion (section)

=== Subatomic particles ===
Within the standard [[atomic orbital model]], [[electron]]s exist in a region around the nucleus of each atom. This region is called the [[electron cloud]]. According to [[Bohr model|Bohr's model]] of the atom, electrons have a high [[Electron velocity|velocity]], and the larger the nucleus they are orbiting the faster they would need to move. If electrons were to move about the electron cloud in strict paths the same way planets orbit the Sun, then electrons would be required to do so at speeds that would far exceed the speed of light. However, there is no reason that one must confine oneself to this strict conceptualization (that electrons move in paths the same way macroscopic objects do), rather one can conceptualize electrons to be 'particles' that capriciously exist within the bounds of the electron cloud.<ref>{{cite web|url=http://www.newton.dep.anl.gov/newton/askasci/1993/physics/PHY112.HTM|title=Classroom Resources|publisher=Argonne National Laboratory|work=anl.gov|access-date=2009-03-09|archive-date=2010-06-08|archive-url=https://web.archive.org/web/20100608223005/http://www.newton.dep.anl.gov/newton/askasci/1993/physics/PHY112.HTM|url-status=live}}</ref> Inside the [[atomic nucleus]], the [[proton]]s and [[neutron]]s are also probably moving around due to the electrical repulsion of the protons and the presence of [[angular momentum]] of both particles.<ref>{{Cite web |url=http://www.lbl.gov/abc/wallchart/teachersguide/pdf/Chap02.pdf |title=Chapter 2, Nuclear Science- A guide to the nuclear science wall chart. Berkley National Laboratory. |access-date=2009-03-09 |archive-date=2009-03-04 |archive-url=https://web.archive.org/web/20090304064927/http://www.lbl.gov/abc/wallchart/teachersguide/pdf/Chap02.pdf |url-status=live }}</ref>