<a href="https://en.wikipedia.org/wiki/Francis_Ronalds" id="mwZg" rel="mw:WikiLink" title="Francis Ronalds">Francis Ronalds</a> describes the first battery-operated clock in the <i id="mwZw"><a href="https://en.wikipedia.org/wiki/Philosophical_Magazine" id="mwaA" rel="mw:WikiLink" title="Philosophical Magazine">Philosophical Magazine</a></i>.<sup about="#mwt63" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-11"}}' id="cite_ref-11" rel="dc:references" typeof="mw:Extension/ref"><a href="./March_9#cite_note-11" id="mwaQ" style="counter-reset: mw-Ref 11;"><span class="mw-reflink-text" id="mwag">[11]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-11"><cite about="#mwt60" class="citation book cs1" id="mwB34"><a class="external text" href="https://books.google.com/books?id=GhpRAAAAYAAJ&amp;pg=PA264" id="mwB38" rel="mw:ExtLink nofollow"><i id="mwB4A">Philosophical Magazine</i></a>. Taylor &amp; Francis. 1815. pp.<span id="mwB4E" typeof="mw:Entity"> </span>261–264. <a class="external text" href="https://web.archive.org/web/20220309143028/https://books.google.com/books?id=GhpRAAAAYAAJ&amp;pg=PA264" id="mwB4I" rel="mw:ExtLink nofollow">Archived</a> from the original on 2022-03-09<span class="reference-accessdate" id="mwB4M">. Retrieved <span class="nowrap" id="mwB4Q">2020-08-23</span></span>.</cite><span about="#mwt60" class="Z3988" id="mwB4U" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Philosophical+Magazine&amp;rft.pages=261-264&amp;rft.pub=Taylor+%26+Francis.&amp;rft.date=1815&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DGhpRAAAAYAAJ%26pg%3DPA264&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMarch+9"></span></span>