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decoding="async" width="200" height="259" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Einstein_Szilard_p1.jpg/300px-Einstein_Szilard_p1.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Einstein_Szilard_p1.jpg/400px-Einstein_Szilard_p1.jpg 2x" data-file-width="765" data-file-height="991" /></a><figcaption>La prima pagina della lettera</figcaption></figure> <p><i><b>Lettera Einstein-Szilárd</b></i>, scritta nel 1939 da <a href="/w/index.php?title=Le%C3%B3_Szil%C3%A1rd&action=edit&redlink=1" class="new" title="Leó Szilárd (la pagina non esiste; clicca per crearla)">Leó Szilárd</a> e firmata da <a href="/wiki/Albert_Einstein" title="Albert Einstein">Albert Einstein</a>, inviata al presidente degli Stati Uniti, <a href="/wiki/Franklin_Delano_Roosevelt" title="Franklin Delano Roosevelt">Franklin Delano Roosevelt</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Citazioni_tratte_dalla_lettera">Citazioni tratte dalla lettera</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lettera_Einstein-Szil%C3%A1rd&action=edit&section=1" title="Modifica la sezione Citazioni tratte dalla lettera"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>[...] la lettura di alcuni recenti lavori di <a href="/wiki/Enrico_Fermi" title="Enrico Fermi">E. Fermi</a> e di <a href="/w/index.php?title=Le%C3%B3_Szil%C3%A1rd&action=edit&redlink=1" class="new" title="Leó Szilárd (la pagina non esiste; clicca per crearla)">L. Szilard</a>, comunicatimi sotto forma di manoscritto, mi induce a ritenere che, tra breve, l'<a href="/wiki/Uranio" title="Uranio">uranio</a> possa dar origine a una nuova e importante fonte di energia. Alcuni aspetti del problema, prospettati in tali lavori, dovrebbero consigliare all'Amministrazione la massima vigilanza e, se necessario, un tempestivo intervento.<sup id="cite_ref-nov_1-0" class="reference"><a href="#cite_note-nov-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> (p. 599)</li> <li><span style="font-weight:bold; font-style:normal;"><small>[<a href="/wiki/Ultime_parole_famose" title="Ultime parole famose">Ultime parole famose</a>]</small></span> <span style="font-weight:bold; font-style:normal;"><small>[con l'energia atomica]</small></span> [...] si potrebbe giungere alla costruzione di <a href="/wiki/Bomba_atomica" title="Bomba atomica">bombe</a> che – è da supporre – saranno di tipo nuovo ed estremamente potenti. Uno solo di tali ordigni, trasportato via mare e fatto esplodere in un porto, potrebbe distruggere l'intero porto e parte del territorio circostante. D'altra parte, l'impiego di queste armi potrebbe risultare ostacolato dal loro eccessivo peso, che ne renderebbe impossibile il trasporto con aerei.<sup id="cite_ref-nov_1-1" class="reference"><a href="#cite_note-nov-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> (p. 599)</li></ul> <div class="mw-heading mw-heading2"><h2 id="Citazioni_sulla_lettera">Citazioni sulla lettera</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lettera_Einstein-Szil%C3%A1rd&action=edit&section=2" title="Modifica la sezione Citazioni sulla lettera"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Ho fatto un errore, nella vita, quando ho firmato quella lettera al presidente <a href="/wiki/Franklin_Delano_Roosevelt" title="Franklin Delano Roosevelt">Roosevelt</a> chiedendo che venisse costruita la bomba atomica. Ma forse mi si potrà perdonare: infatti tutti noi eravamo convinti che fosse altamente probabile che i tedeschi riuscissero a costruirla, e a usarla per diventare la razza padrona. (<a href="/wiki/Albert_Einstein" title="Albert Einstein">Albert Einstein</a>)</li></ul> <div class="mw-heading mw-heading2"><h2 id="Note">Note</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lettera_Einstein-Szil%C3%A1rd&action=edit&section=3" title="Modifica la sezione Note"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-nov-1"><span class="mw-cite-backlink">↑ <a href="#cite_ref-nov_1-0"><sup>a</sup></a> <a href="#cite_ref-nov_1-1"><sup>b</sup></a></span> <span class="reference-text">Citato anche in Albert Einstein, <i>Pensieri di un uomo curioso</i> (<i>The Quotable Einstein</i>, 1996), a cura di Alice Calaprice, prefazione di <a href="/wiki/Freeman_Dyson" title="Freeman Dyson">Freeman Dyson</a>, traduzione di Sylvie Coyaud, Arnoldo Mondadori Editore, Milano, 1997, p. 91. <a href="/wiki/Speciale:RicercaISBN/8804474793" class="internal mw-magiclink-isbn">ISBN 88-04-47479-3</a></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Bibliografia">Bibliografia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lettera_Einstein-Szil%C3%A1rd&action=edit&section=4" title="Modifica la sezione Bibliografia"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><i>Lettera al presidente F.D. Roosevelt</i>, traduzione di Ermanno Sagittario; in Albert Einstein, <i>Opere scelte</i>, a cura di Enrico Bellone, traduzioni di AA.VV., Bollati Boringhieri, collana Pantheon, Torino, 1988, parte quinta, pp. 599-600. <a href="/wiki/Speciale:RicercaISBN/9788833904429" class="internal mw-magiclink-isbn">ISBN 978-88-339-0442-9</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Voci_correlate">Voci correlate</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lettera_Einstein-Szil%C3%A1rd&action=edit&section=5" title="Modifica la sezione Voci correlate"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Arma_nucleare" title="Arma nucleare">Arma nucleare</a></li> <li><a href="/wiki/Bomba_atomica" title="Bomba atomica">Bomba atomica</a></li> <li><a href="/wiki/Energia_nucleare" title="Energia nucleare">Energia nucleare</a></li> <li><a href="/wiki/Progetto_Manhattan" title="Progetto Manhattan">Progetto Manhattan</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Altri_progetti">Altri progetti</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lettera_Einstein-Szil%C3%A1rd&action=edit&section=6" title="Modifica la sezione Altri progetti"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div id="interProject" class="toccolours" style="display: none; 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