| In maps, Map of Physics, or “Porter’s Map of Physics”, is a 1939 map of the history of physics, physics defined as a “science which concerns itself with the fundamental laws of a material universe”, by American physicist Bernard H. Porter (1911-2004), according to which theoretical starting points, such as mechanics, sound, light, radioactivity, etc., are conceptualized as water sources, or bodies of uncharted water, from which the "streams of thought" emerge, alongside of which key thinkers, e.g. Empedocles, Newton, Clausius, Maxwell, etc., are shown, conceptualized as river-side "villages", towns, metropolises that come into or out of existence, feeding off the river, all contributing to the flow of ideas, theories, and concepts into the so-called future of physics, the last village mapped out being Paul Dirac, the person who in 1945 summarized that all of the various villages come before him can be reduced to fermion-boson interactions in a godless universe.|
The following is the abstract of the map: 
“This map is the culmination of a six-year-long labor of love by noted physicist, visual artist, poet, and peace activist Bernard H. Porter [1911-2004]. Porter began compiling the historical data upon which the map is based in 1932 while a fellow in radioactive research at Brown University. He then took most of the summer of 1933, working out of his parent’s home in Houlton, Maine, to compose the map’s striking visuals. The following years were spent circulating the map among prominent physicists and historians of science to verify its accuracy. The end result is a rich geography of a scientific field, one that uses mapping conventions to make understandable the way ideas move and develop over time. Ambitious in scope, the map traces the history of physics from the 6th century BC to the present day . Key theoretical starting points such as ‘mechanics,’ ‘sound,’ ‘and light’ appear as water sources from which streams of thought emerge. Located alongside these rivers are “villages” representing figures like Isaac Newton, Alessandro Volta, Werner Heisenberg, and other major contributors to the development of physics. Surrounding it all is the map’s border, which is decorated with 24 diagrams that frequently appear in the work of physicists.”
The following is the Porter's map of physics:
| Cities | Towns|
In Porter's map of physics, there are 121 main cites or towns, along the tributaries of knowledge, which are grouped by river (knowledge branch) and bend (e.g. Joule) as follows:
Anaxagoras to Kepler | 9 | STANDARD MODEL, ATOMIC THEORY, TO ASTRONOMY
The above version of Porter's map is soul-labeled, i.e. physicists who digressed on religious matters and or whose cosmology of physics and being were unified, e.g. Empedocles, are shown boxed, per the post-0BC religion | science divide, according to which modern 21st century physics does not, in any sense, recognize the term "soul", give or take passing dialogue, e.g. Heisenberg-Pauli dialogue, Einstein on the soul, Maxwell, e.g. who said his soul’s an “amphicheiral knot” (Ѻ), among others (see: geniuses on), whereas Porter in the early 20th century specifically uses the term "daring souls" (possibly as metaphor); whereas at the end of the 20th century the discussion and critique of religion and or open discussion of atheism had become the “last taboo” as classified by Wendy Kaminer, in her 1996 article “The Last Taboo: Why America Needs Atheism” (see: Zerotheism for Kids) turned 1999 book Sleeping with Extraterrestrials: the Rise of Irrationalism and Perils of Piety . 
1. (a) Porter, Bernard. 1939. Being a Map of Physics. Courtesy of Maine State Library and Mark Melnicove.
(b) Bern Porter (1911-2004) – Virginia.edu.
(b) In "10th Iteration (2014): The Future of Science Mapping," Places & Spaces: Mapping Science, edited by Katy Börner and Samuel Mills.
(c) Being a Map of Physics (zoom) (Ѻ) – SciMaps.org.
2. (a) Kaminer, Wendy. (1996). “The Last Taboo: Why America Needs Atheism” (Ѻ), The New Republic, Oct 14.
(b) Kaminer, Wendy. (1999). Sleeping with Extraterrestrials: the Rise of Irrationalism and Perils of Piety. Pantheon Books.