<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE article  PUBLIC "-//NLM//DTD Journal Publishing DTD v3.0 20080202//EN" "http://dtd.nlm.nih.gov/publishing/3.0/journalpublishing3.dtd"><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" dtd-version="3.0" xml:lang="en" article-type="research article"><front><journal-meta><journal-id journal-id-type="publisher-id">WJM</journal-id><journal-title-group><journal-title>World Journal of Mechanics</journal-title></journal-title-group><issn pub-type="epub">2160-049X</issn><publisher><publisher-name>Scientific Research Publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.4236/wjm.2017.73006</article-id><article-id pub-id-type="publisher-id">WJM-74664</article-id><article-categories><subj-group subj-group-type="heading"><subject>Articles</subject></subj-group><subj-group subj-group-type="Discipline-v2"><subject>Engineering</subject><subject> Physics&amp;Mathematics</subject></subj-group></article-categories><title-group><article-title>
 
 
  The Works and Days of Gabriel Barcel&#243;
 
</article-title></title-group><contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Justo</surname><given-names>Merino</given-names></name><xref ref-type="aff" rid="aff1"><sub>1</sub></xref></contrib></contrib-group><aff id="aff1"><label>1</label><addr-line>Universidad Autónoma de Madrid, Madrid, Spain</addr-line></aff><author-notes><corresp id="cor1">* E-mail:</corresp></author-notes><pub-date pub-type="epub"><day>13</day><month>03</month><year>2017</year></pub-date><volume>07</volume><issue>03</issue><fpage>43</fpage><lpage>45</lpage><history><date date-type="received"><day>December</day>	<month>28,</month>	<year>2016</year></date><date date-type="rev-recd"><day>Accepted:</day>	<month>March</month>	<year>10,</year>	</date><date date-type="accepted"><day>March</day>	<month>13,</month>	<year>2017</year></date></history><permissions><copyright-statement>&#169; Copyright  2014 by authors and Scientific Research Publishing Inc. </copyright-statement><copyright-year>2014</copyright-year><license><license-p>This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/</license-p></license></permissions><abstract><p>
 
 
  This paper is a commentary to the book: 
  <em>New Paradigm in Physics—Theory of Dynamic Interactions</em>, published by Gabriel Barcel&#243;. The paper describes the origins of the Theory of Dynamic Interactions, his contents and certain circumstances of it. He remembers certain conclusions of the researcher. For example, howa free, unrestrained body in space, can initiate an orbit that has no need for the existence of a central force.
 
</p></abstract><kwd-group><kwd>Dynamic Interactions</kwd><kwd> Miguel Catal&#225;n</kwd><kwd> Flight of the Boomerang</kwd><kwd>  Rotating World</kwd><kwd> Imago Universi</kwd><kwd> Paradigm in Physics</kwd><kwd> Cosmos</kwd></kwd-group></article-meta></front><body><sec id="s1"><title>Cite this paper</title><p>Merino, J. (2017) The Works and Days of Gabriel Barcel&#243;. World Journal of Mechanics, 7, 43-45. https://doi.org/10.4236/wjm.2017.73006</p></sec><sec id="s2"><title>NOTES</title></sec></body><back><ref-list><title>References</title><ref id="scirp.74664-ref1"><label>1</label><mixed-citation publication-type="other" xlink:type="simple">Barceló, G. (2006) The Flight of the Boomerang (El vuelo del bumerán). Marcombo, Barcelona. http://www.dinamicafundacion.com/</mixed-citation></ref><ref id="scirp.74664-ref2"><label>2</label><mixed-citation publication-type="other" xlink:type="simple">Barceló, G. (2008) A Rotating World (Un mundo en rotación). Marcombo, Bar-celona. http://www.dinamicafundacion.com/</mixed-citation></ref><ref id="scirp.74664-ref3"><label>3</label><mixed-citation publication-type="other" xlink:type="simple">Barceló, G. (2013) Imago Universi: A Story of the Human Conception of the Cosmos. Arpegio, Barcelona. http://imagouniversi.com/</mixed-citation></ref><ref id="scirp.74664-ref4"><label>4</label><mixed-citation publication-type="other" xlink:type="simple">Barceló, G. (2012) Miguel A. Catalán Sa&amp;ntilde;udo. Living Memory. Arpegio, Barcelona.</mixed-citation></ref><ref id="scirp.74664-ref5"><label>5</label><mixed-citation publication-type="other" xlink:type="simple">Barceló, G. (2017) New Paradigm in Physics,Volume I: Theory of Dynamics Interactions. Amazon, Madrid.</mixed-citation></ref></ref-list></back></article>