<a href="https://en.wikipedia.org/wiki/J._J._Thomson" id="mwZQ" rel="mw:WikiLink" title="J. J. Thomson">J. J. Thomson</a> of the <a href="https://en.wikipedia.org/wiki/Cavendish_Laboratory" id="mwZg" rel="mw:WikiLink" title="Cavendish Laboratory">Cavendish Laboratory</a> announces his discovery of the <a href="https://en.wikipedia.org/wiki/Electron" id="mwZw" rel="mw:WikiLink" title="Electron">electron</a> as a <a href="https://en.wikipedia.org/wiki/Subatomic_particle" id="mwaA" rel="mw:WikiLink" title="Subatomic particle">subatomic particle</a>, over 1,800 times smaller than a <a href="https://en.wikipedia.org/wiki/Proton" id="mwaQ" rel="mw:WikiLink" title="Proton">proton</a> (in the atomic nucleus), at a lecture at the <a href="https://en.wikipedia.org/wiki/Royal_Institution" id="mwag" rel="mw:WikiLink" title="Royal Institution">Royal Institution</a> in London.<sup about="#mwt22" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-3"}}' id="cite_ref-3" rel="dc:references" typeof="mw:Extension/ref"><a href="./April_30#cite_note-3" id="mwaw" style="counter-reset: mw-Ref 3;"><span class="mw-reflink-text" id="mwbA">[3]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-3"><cite about="#mwt19" class="citation journal cs1" id="CITEREFSutton1997">Sutton, Christine (8 January 1997). "Ninety years around the atom". <i id="mwBs8">New Scientist</i>: 49.</cite><span about="#mwt19" class="Z3988" id="mwBtA" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=New+Scientist&amp;rft.atitle=Ninety+years+around+the+atom&amp;rft.pages=49&amp;rft.date=1997-01-08&amp;rft.aulast=Sutton&amp;rft.aufirst=Christine&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AApril+30"></span></span>