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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Brian Pippard</span></h1>
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<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="de" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="de" dir="ltr"><p>Sir <b>Alfred Brian Pippard</b> (* <a href="7._September" title="7. September">7. September</a> <a href="1920" title="1920">1920</a> in <a href="Earls_Court" title="Earls Court">Earls Court</a>, <a href="London" title="London">London</a>; † <a href="21._September" title="21. September">21. September</a> <a href="2008" title="2008">2008</a> in <a href="Cambridge" title="Cambridge">Cambridge</a>) war ein britischer Physiker.
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<div class="mw-heading mw-heading2"><h2 id="Leben_und_Werk">Leben und Werk</h2></div>
<p>Pippard studierte am 'Clifton College' in <a href="Bristol" title="Bristol">Bristol</a>. Der Betreuer seiner Promotion war <a href="David_Shoenberg" title="David Shoenberg">David Shoenberg</a>. Er war von 1971 bis 1984 Professor für Physik am <a href="Cavendish_Laboratory" class="mw-redirect" title="Cavendish Laboratory">Cavendish Laboratory</a> und Ehrenmitglied der 'Clare Hall', <a href="Universit%C3%A4t_Cambridge" class="mw-redirect" title="Universität Cambridge">Universität Cambridge</a>, deren erster Präsident er war.
</p><p>Pippard war ein herausragender <a href="Festk%C3%B6rperphysik" title="Festkörperphysik">Festkörperphysiker</a> und <a href="Tieftemperaturphysik" title="Tieftemperaturphysik">Tieftemperaturphysiker</a>.
Er führte den Begriff der Köhärenzlänge im <a href="Supraleiter" title="Supraleiter">Supraleiter</a> ein, indem er die <a href="London-Gleichungen" class="mw-redirect" title="London-Gleichungen">London-Gleichungen</a> nichtlokal formulierte (London-Pippard-Theorie)<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>. Diese Köhärenzlänge kann im Rahmen der <a href="BCS-Theorie" title="BCS-Theorie">BCS-Theorie</a> mikroskopisch fundiert werden.
Er bewies die Existenz der <a href="Fermifl%C3%A4che" class="mw-redirect" title="Fermifläche">Fermifläche</a> in Metallen durch Reflexions- und Absorptionsmessungen von Mikrowellen an Kupfer<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>.
Pippard war Autor verschiedener Lehrbücher und Monografien zur <a href="Thermodynamik" title="Thermodynamik">Thermodynamik</a>, <a href="Festk%C3%B6rperphysik" title="Festkörperphysik">Festkörperphysik</a> und <a href="Mechanik" title="Mechanik">Mechanik</a>.
</p><p>Er betreute die Promotion von <a href="Brian_D._Josephson" class="mw-redirect" title="Brian D. Josephson">Brian D. Josephson</a> 1964, der für seine Arbeiten den <a href="Nobelpreis" title="Nobelpreis">Nobelpreis</a> 1973 erhielt. 1970 wurde Pippard in die <a href="American_Academy_of_Arts_and_Sciences" title="American Academy of Arts and Sciences">American Academy of Arts and Sciences</a> gewählt.
</p><p>Pippard war ein talentierter klassischer Pianist.
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<div class="mw-heading mw-heading2"><h2 id="Werke_(Auswahl)"><span id="Werke_.28Auswahl.29"></span>Werke (Auswahl)</h2></div>
<ol class="references">
<li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text">A. B. Pippard, <i>Proc. Roy. Soc.</i> (London), <b>A 216</b>, 547 (1953).</span>
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<li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text">A. B. Pippard, <i>Phil. Trans. Roy. Soc.</i> <b>A 250</b>, 325 (1957).</span>
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<ul><li><i>Elements of Classical Thermodynamics for Advanced Students of Physics</i>, Cambridge University Press, 1957, ISBN 0521091012</li>
<li><i>The dynamics of Conduction Electrons</i>, Documents on Modern Physics, Gordon & Beach, New York, 1965, ISBN 0677007256</li>
<li><i>The Physics of Vibration</i>, Cambridge University Press, 2007, ISBN 0521033330</li>
<li><i>Magnetoresistance in metals</i>, Cambridge University Press, 1989, ISBN 0521118808.</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Quellen">Quellen</h2></div>
<ul><li>John Waldram: <a rel="nofollow" class="external text" href="http://www.nature.com/nature/journal/v455/n7217/full/4551191a.html"><i>Brian Pippard (1920-2008): Low-temperature physicist who excelled in subtle intuitive concepts</i></a>, Nature <b>455</b>, 1191 (30. Oktober 2008).</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Weblinks">Weblinks</h2></div>
<ul><li><a rel="nofollow" class="external text" href="http://www.phy.cam.ac.uk/history/cavprof.php">Die Cavendish Professur für Physik</a>, Cavendish Laboratory, University of Cambridge, Department of Physics (in Englisch).</li>
<li><a rel="nofollow" class="external text" href="http://www.cambridge2000.com/cambridge2000/html/0006/P6271538.html">Das Brian Pippard Gebäude, Cambridge</a></li>
<li><a rel="nofollow" class="external text" href="http://www.alanmacfarlane.com/ancestors/pippard.htm">Brian Pippard in Interview mit Alan Macfarlane vom 31. März 2008 (Film in Englisch)</a></li></ul>
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Normdaten (Person): <a href="Gemeinsame_Normdatei" title="Gemeinsame Normdatei">GND</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://d-nb.info/gnd/1057561053">1057561053</a></span> | <a href="Library_of_Congress_Control_Number" title="Library of Congress Control Number">LCCN</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://id.loc.gov/authorities/n50011037">n50011037</a></span> | <a href="Web_NDL_Authorities" title="Web NDL Authorities">NDL</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://id.ndl.go.jp/auth/ndlna/00473119">00473119</a></span> | <a href="Virtual_International_Authority_File" title="Virtual International Authority File">VIAF</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://viaf.org/viaf/76377581/">76377581</a></span> | </div>
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